Kempen, Gerard; Olsthoorn, Nomi & Sprenger, Simone (in press; published online 2011). Grammatical workspace sharing during language production and language comprehension: Evidence from grammatical multitasking. Language and Cognitive Processes. DOI: 10.1080/01690965.2010.544583 [pdf]

Harbusch, Karin & Kempen, Gerard (2011). Automatic online writing support for L2 learners of German through output monitoring by a natural-language paraphrase generator. In M. Levy, F. Blin, C. Bradin Suskin, & O. Takeuchi (Eds.), WorldCALL: International perspectives on computer-assisted language learning. New York, NY: Routledge. [pdf]

Vosse, Theo & Kempen, Gerard (2009b). The Unification Space as a localist neural net: Predictions and error-tolerance in a constraint-based parser. Cognitive Neurodynamics, 3, 331-346. [pdf]

Harbusch, Karin & Kempen, Gerard (2009). Clausal Coordinate Ellipsis and its Varieties in Spoken German: A Study with the TüBa-D/S Treebank of the VERBMOBIL Corpus. In: Passarotti, M., Przepiórkowski, A.,Raynaud, S. & Van Eynde, F.  (Eds.) Proceedings of the The Eighth International Workshop on Treebanks and Linguistic Theories, Milan, December 2009. [pp. 83-94] [pdf]

Harbusch, Karin & Kempen, Gerard (2009). A treebank study of clausal coordinate ellipsis in spoken and written language. In: Proceedings of AMLaP2009, Barcelona, September 2009. [PDF of Long Abstract:[pdf]; Powerpoint of poster: [ppt]]

Harbusch, Karin & Kempen, Gerard (2009). Generating clausal coordinate ellipsis multilingually: A uniform approach based on postediting. In: Proceedings of the Twelfth Conference of the European Chapter of the Association for Computational Linguistics, Athens, April 2009. [pdf]

Kempen, Gerard (2009). Clausal coordination and coordinate ellipsis in a model of the speaker. Linguistics, 47, 653-696. [pdf]

Snijders, Tineke M.; Vosse, Theo; Kempen, Gerard; Van Berkum Jos J.A.; Petersson, Karl Magnus & Hagoort, Peter (2009). Retrieval and unification of syntactic structure in sentence comprehension: an fMRI study using word-category ambiguity. Cerebral Cortex, 19, 1493-1503. [pdf]

Vosse, Theo & Kempen, Gerard (2009a). In defense of competition during syntactic ambiguity resolution. Journal of Psycholinguistic Research, 38, 1-9. [pdf]

Harbusch, Karin; Kempen, Gerard & Vosse, Theo (2008). A natural-language paraphrase generator for on-line monitoring and commenting incremental sentence construction by L2 learners of German. In: Proceedings of WorldCALL2008 (Fukuoka, Japan, August 2008). [pdf]

Vosse, Theo G. & Kempen, Gerard A.M. (2008). Parsing verb-final clauses in German: Garden-path and ERP effects modeled by a parallel dynamic parser. In: B. C. Love, K. McRae, & V. M. Sloutsky (Eds.), Proceedings of the 30th Annual Conference of the Cognitive Science Society. Austin, TX: Cognitive Science Society.[pp.261-266] [pdf]

Kempen, Gerard & Harbusch, Karin (2008). Comparing linguistic judgments and corpus frequencies as windows on grammatical competence: A study of argument linearization in German clauses. In: Steube, Anita (Ed.),The discourse potential of underspecified structures. Berlin: Walter de Gruyter. [pdf] [Abstract (not published in book): [pdf]]

Kuiper, Koenraad; van Egmond, Marie-Elaine; Kempen, Gerard & Sprenger, Simone (2007). Slipping on superlemmas: Multi-word lexical items in speech production. The Mental Lexicon, 2, 313-357. [pdf]

Harbusch, Karin; van Breugel, Camiel; Koch, Ulrich & Kempen, Gerard (2007). Interactive sentence combining and paraphrasing in support of integrated writing and grammar instruction: A new application area for natural language sentence generators. In: Stephan Busemann (Ed.), Proceedings of the 11th European Workshop on Natural Language Generation (ENLG07, Dagstuhl, Germany, June 2007).[pp. 65-68] [pdf]

Harbusch, Karin & Kempen, Gerard (2007). Clausal coordinate ellipsis in German: The TIGER treebank as a source of evidence. In: Nivre, Joakim; Kaalep, Heiki-Jaan; Muischnek, Kadri & Koit, Mare (Eds.), Proceedings of the Sixteenth Nordic Conference of Computational Linguistics (NODALIDA 2007, Tartu, Estonia, May 2007). [pp. 81-88] [pdf]

Kempen, Gerard (2009). Clausal coordination and coordinate ellipsis in a model of the speaker. Linguistics, 47, 653-696. [pdf]

Kempen, Gerard (2007). De kunst van het weglaten: Elliptische nevenschikking in een model van de spreker. In: In: Moerdijk, Fons; van Santen, Ariane & Tempelaars, Rob (Eds.), Leven met woorden. Afscheidsbundel voor Piet van Sterkenburg. Leiden: Brill. [pp. 397-407]. [Summary in Dutch of: Kempen, G. (2009). Clausal coordination and coordinate ellipsis in a model of the speaker. Linguistics.] [pdf]

Harbusch, Karin, Kempen, Gerard; van Breugel, Camiel & Koch, Ulrich (2006).  A generation-oriented workbench for Performance Grammar: Capturing linear order variability in German and Dutch. In: Proceedings of the Fourth International Natural Language Generation Conference (Sydney, Australia, July 2006). [pp. 9-11]. [pdf]

Harbusch, Karin & Kempen, Gerard (2006). ELLEIPO: A module that computes coordinative ellipsis for language generators that don’t. In: EACL-2006: 11th Conference of the European Chapter of the Association for Computational Linguistics (Trento, Italy; April 2006). [Conference Companion, pp. 115-118.] [pdf]

Sprenger, Simone A., Levelt, Willem J.M. & Kempen, Gerard (2006). Lexical access during the production of idiomatic phrases. Journal of Memory and Language, 54, 161-184. [pdf]

Kempen, Gerard & Harbusch, Karin (2005). The relationship between grammaticality ratings and corpus frequencies: A case study into word order variability in the midfield of German clauses. In: Kepser, Stephan & Reis, Marga (Eds.), Linguistic Evidence — Empirical, Theoretical, and Computational Perspectives. Berlin: Mouton De Gruyter.[pp. 327-347] [pdf]

Kempen, Gerard & Van Breugel, Camiel (unpublished, 2005). Interactive visualization of syntactic structure assembly for grammar-intensive first- and second-language instruction.[pdf]
[Slightly revised version of: Kempen, Gerard (2004). Interactive visualization of syntactic structure assembly for grammar-intensive first- and second-language instruction. In: Delmonte, R., Delcloque, Ph. & Tonelli, S. (Eds.), Proceedings of InSTIL/ICALL2004 Symposium on NLP and speech technologies in advanced language learning systems (Venice, Italy, June 2004). [pp. 183-186] [pdf]]

Kempen, Gerard & Harbusch, Karin (2004). Generating natural word orders in a semi–free word order language: Treebank-based linearization preferences for German. In: Gelbukh, A. (Ed.), Fifth International Conference on Intelligent Text Processing and Computational Linguistics (CICLing2004), Seoul, South Korea. Berlin: Springer Verlag [Lecture Notes in Computer Science 2945; pp. 350-354]. [pdf]

Kempen, Gerard & Harbusch, Karin (2004). A corpus study into word order variation in German subordinate clauses: Animacy affects linearization independently of grammatical function assignment. In: Pechmann, T. & Habel, C. (Eds.), Multidisciplinary approaches to language production. Berlin: Mouton De Gruyter. [pp. 173-181]. [pdf]

Kempen, Gerard & Harbusch, Karin (2003). Dutch and German verb constructions in Performance Grammar. In: Seuren, P. & Kempen, G. (Eds.), Verb constructions in German and Dutch. Amsterdam: Benjamins. [pp. 185-221] [pdf]

Kempen, Gerard & Harbusch, Karin (2003). Word order scrambling as a consequence of incremental sentence production. In: Härtl, Holden, & Tappe, Heike (Eds.), Mediating between concepts and grammar. Berlin: Mouton De Gruyter.[pp. 141-164] [pdf]

Kempen, Gerard & Harbusch, Karin (2003). An artificial opposition between grammaticality and frequency: comment on Bornkessel, Schlesewsky & Friederici (2002). Cognition, 90, 205-210. [pdf] Rectification on p. 215. [pdf]

Harbusch, Karin & Kempen, Gerard (2002). A quantitative model of word order and movement in English, Dutch and German complement constructions. In:  Proceedings of the 19th International Conference on Computational Linguistics (COLING-2002), Taipei (Taiwan). San Francisco: Morgan Kaufmann. [pp. 328-334] [pdf]

Kempen, Gerard & Harbusch, Karin (2002). Performance Grammar: A declarative definition. In: Nijholt, Anton, Theune, Mariët & Hondorp, Hendri. (Eds.), Computational Linguistics in the Netherlands 2001. Amsterdam: Rodopi. [pp. 148-162] [pdf]

Vosse, Theo & Kempen, Gerard (2000). Syntactic structure assembly in human parsing: A computational model based on competitive inhibition and a lexicalist grammar. Cognition, 75, 105-143. [pdf]

Kempen, Gerard (2000). Could grammatical encoding and grammatical decoding be subserved by the same processing module? Behavioral and Brain Sciences, 23, 38-39. [pdf]

Harbusch, Karin & Kempen, Gerard (2000). Complexity of linear order computation in Performance Grammar, TAG and HPSG. In Proceedings of Fifth International Workshop on Tree Adjoining Grammars and Related Formalisms (TAG+5), Université Paris 7, May 2000. [pdf]

Kempen, Gerard (1999). Visual Grammar: Multimedia for grammar and spelling instruction in primary education. In: K.C. Cameron (Ed.). CALL: Media, design, and applications. Lisse: Swets & Zeitlinger. [pp. 223-238] [pdf]

Kempen, Gerard (1999). Fiets en (centri)fuge. Onze Taal, 68, 88. [pdf]

Kempen, Gerard (1998). Comparing and explaining the trajectories of first and second language acquisition: in search of the right mix of psychological and linguistic factors. Bilingualism: Language and Cognition, 1, 29-30. [pdf]

Kempen, Gerard & Harbusch, Karin (1998). A ‘tree adjoining’ grammar without adjoining: The case of scrambling in German. In: Fourth International Workshop on Tree Adjoining Grammars and Related Frameworks (TAG+4), University of Pennsylvania, August 1998. (IRCS report 98-12). [Long Abstract] [pdf]

Kempen, Gerard (1998). Sentence parsing. In: Friederici, Angela D. (Ed.), Language comprehension: A biological perspective. Berlin/Heidelberg: Springer. [pp. 213-228; in Second Edition, 1999: pp. 211-227] [pdf]

Kempen, Gerard, Kooij, Andress, & Van Leeuwen, Theo (1997). Do skilled readers exploit inflectional spelling cues that do not mirror pronunciation? An eye movement study of morpho-syntactic parsing in Dutch. In Abstracts of the Orthography Workshop “What spelling changes”, Nijmegen, November 6-7, 1997. Nijmegen: Max Planck Institute for Psycholinguistics. [Long Abstract, 6 pages] [PDF]

Kempen, Gerard (1996). Computational models of syntactic processing in human language comprehension. In: Dijkstra, T. & De Smedt, K. (Eds.), Computational psycholinguistics: symbolic and subsymbolic models of language processing. London: Taylor & Francis. [pp. 192-220] [pdf]

Kempen, Gerard (1996). Human Language Technology can modernize writing and grammar instruction. In: Proceedings of the 16th International Conference on Computational Linguistics (COLING-96), Copenhagen, August 1996. [pp.1005-1006; position paper] [pdf]

Kempen, G.A.M. (1996). Lezen, leren lezen, dyslexie: de auditieve basis van visuele woordherkenning. Nederlands Tijdschrift voor de Psychologie, 51, 91-100. [pdf]

[An earlier, slightly different version was published In Marani, E. & Lanser, J.B.K. (Red.), Dyslexie: foutloos spellen alleen weggelegd voor gestoorden? Leiden: Boerhaave Commissie voor Postacademisch Onderwijs in de Geneeskunde, Rijksuniversiteit Leiden]

Kempen, G. (1996). De elektronische snelweg als via regia voor publicatie en gebruik van nieuwe wetenschappelijke kennis. In Lisman, J.J.W., Goris, G. & Van Soest, J.G. (Red.) Van kennis naar informatie, van informatie naar kennis. Symposium ter gelegenheid van de officiële opening van de Walaeus Bibliotheek. Leiden: Boerhaave Commissie voor Postacademisch Onderwijs in de Geneeskunde, Rijksuniversiteit Leiden. [pdf]

Kempen, Gerard & Alice Dijkstra (1994). Toward an integrated system for grammar, writing and spelling instruction. In: L. Appelo & F.M.G. de Jong (Eds.) Computer-Assisted Language Learning. Proceedings of the Seventh Twente Workshop on Language Technology. Enschede: University of Twente. [pp. 41-46] [pdf]

Kempen, Gerard (1994). De mythe van het woordbeeld. Spellingherziening taalpsychologisch doorgelicht. Spektator, tijdschrift voor Neerlandistiek, 23, 292-301. [pdf]

Kempen, G.A.M. (1993). Spraakkunst als bouwkunst. Inaugural Address, Leiden University, March 19th, 1993. [pdf]

Kempen, Gerard (1992). Language generation. In Bright, W. (Ed.) International Encyclopedia of Linguistics. New York: Oxford University Press. [Vol. 3, pp. 59-61] [pdf]

Kempen, Gerard & Vosse, Theo 1992). A language-sensitive text editor for Dutch. In O’Brian Holt, Patrik & Williams, Noel (Eds.) Computers and writing: state of the art. Oxford: Intellect and Dordrecht: Kluwer Academic Publishers. [pdf]

Kempen, Gerard (1992). Second language acquisition as a hybrid learning process. In Engel, F.L., Bouwhuis, D.G., Bösser, T. & d’Ydewalle, G. (Eds.) Cognitive modelling and interactive environments in language learning. Berlin: Springer. [pdf]

Kempen, Gerard (1991). Conjunction reduction and gapping in clause-level coordination: an inheritance- based approach. Computational Intelligence, 7, 357-360. [pdf]

Vosse, Theo & Kempen, Gerard (1991). A hybrid model of human sentence processing: parsing right-branching, center-embedded and cross-serial dependencies. In: M. Tomita (Ed.), Proceedings of the Second International Workshop on Parsing Technologies (Cancun, Mexico, February 1991). [pdf]

De Smedt, Koenraad & Kempen, Gerard (1991). Segment Grammar: a formalism for incremental sentence generation. In Paris, C.L., Swartout, W.R. & Mann, W.C. (Eds.) Natural language generation and computational linguistics. Dordrecht: Kluwer Academic Publishers. [pp. 329-349] [pdf]

Kempen, Gerard & De Smedt, Koenraad (1990). Tree Adjoining Grammar, Segment Grammar, and incremental sentence generation. In Extended abstracts of the First International Workshop on Tree Adjoining Grammars: Formal Theory and Application, Schloss Dagstuhl, August 15-17, 1990. Saarbrücken: Deutsches Forschungszentrum für Künstliche Intelligenz. [pdf of Prepublication version]

De Smedt, Koenraad & Kempen, Gerard (1990). Discontinuous constituency in Segment Grammar. In: Proceedings of the Symposium on Discontinuous Constituency. Tilburg: University of Brabant. [A slightly revised version appeared in: Bunt, Harry & van Horck, Arthur (Eds.) (1996), Discontinuous Constituency. Berlin/New York: Mouton de Gruyter. [pp. 141-163] [pdf of 1996 version].

Kempen, Gerard & Vosse, Theo (1989). Incremental syntactic tree formation in human sentence processing: a cognitive architecture based on activation decay and simulated annealing. Connection Science, 1, 273-290. [Reprinted as Chapter 5 in: Sharkey, N. (Ed.) (1992) Connectionist Natural Language Processing. Oxford: Intellect. [The PDF file originates from an OCR'ed scan of this publication: [pdf]

Kempen, Gerard (1990). Taaltechnologie en de toekomst van tekstautomatisering. Informatie, 32, 724-727. [pdf]

Kempen, G.A.M. (1989). Informatiegedragskunde: pijler van de moderne informatieverzorging. In Marks, A.F. (Ed.), Sociaal-wetenschappelijke informatie en kennisvorming in onderzoek, onderzoeksbeleid en beroep. Amsterdam: SWIDOC. [pdf]

Kempen, G.A.M. (1988). De netwerker: spin in het web of rat in een doolhof? Over het belang van bedieningsgemak bij veelzijdig netwerkgebruik. In Congresverslag SURF in theorie en praktijk, van personal tot supercomputer (Amsterdam, October 1988). [pdf]

Kempen, Gerard (1987). A framework for incremental syntactic tree formation. Proceedings of the Tenth International Joint Conference on Artificial Intelligence (IJCAI'87), Milan. [pdf]

Kempen, Gerard & Eduard Hoenkamp (1987). An incremental procedural grammar for sentence formulation. Cognitive Science, 11, 201-258. [pdf]

De Smedt, Koenraad & Kempen, Gerard (1987). Incremental sentence production, self-correction, and coordination. In Kempen, Gerard (Ed.), Natural language generation: new results in artificial intelligence, psychology and linguistics. Dordrecht: Kluwer Academic Publishers. [pdf]

Van Wijk, Carel & Kempen, Gerard (1987). A dual system for producing self-repairs in spontaneous speech: evidence from experimentally elicited corrections. Cognitive Psychology, 19, 403-440. [pdf]

Kempen, Gerard (1987). Tekstverwerking: de vijfde generatie. Informatie, 29, 402-406. [pdf]

Kempen, Gerard; Anbeek, Gert; Desain, Peter; Konst, Leo & De Smedt, Koenraad (1987b). Auteursomgevingen: vijfde-generatie tekstverwerkers. Informatie, 29, 988-993. [pdf]

Pijls, Fieny; Daelemans, Walter & Kempen, Gerard (1987). Artificial Intelligence tools for grammar and spelling instruction. Instructional Science, 16, 319-336. [pdf]

Kempen, G. (1986). RIKS: Kennistechnologisch centrum voor bedrijfsleven en wetenschap. Informatie, 28, 122-125. [pdf]

Pijls, Fieny & Kempen, Gerard (1986). Een psycholinguïstisch model voor grammatische samentrekking. De Nieuwe Taalgids, 79, 217-234. [pdf]

Kempen, Gerard (1986). Kunstmatige intelligentie en gezond verstand. In Hagoort, P. & Maessen, R. (Eds.), Geest, Computer, Kunst. Utrecht: Stichting Grafiet. [pdf]

Kempen, Gerard (1986). Beyond word processing. In Cluff, E.G. & Bunting, Graham (Eds.), Information Management Yearbook 1986. London: IDPM Publications (Institute of Data Processing Management). [pdf]

Van Wijk, Carel & Kempen, Gerard (1985). From sentence structure to intonation contour: An algorithm for computing pitch contours on the basis of sentence accents and syntactic structure. In Müller, B.S. (Ed.), Sprachsynthese. Hildesheim: Olms. [pdf; OCR’ed from first author’s PhD dissertation, 1987]

Naffah, N., Kempen, G., Rohmer, J., Steels, L., Tsichritzis, D. &White, G. (1985). Intelligent workstation in the office. State of the art and future perspectives. In Roukens, J. & Renuart, J.F. (Eds.), ESPRIT ‘84: Status report of ongoing work. Amsterdam: North-Holland. [pdf]

Kempen, G. (1985). Psychologie 2000. Toegepaste psychologie in de informatie- maatschappij. In Maarsse, F.J, van den Bosch, W.E.J., Zuiderveen, E.A. & Wittenburg, P. (Eds.), Computers in de psychologie. Lisse: Swets & Zeitlinger. [pdf]

Kempen, G., Konst, L. & De Smedt, K. (1984). Taaltechnologie voor het Nederlands: vorderingen bij de bouw van een Nederlandstalig dialoog- en auteursysteem. Informatie, 26, 878-881. [Reprinted in Toegepaste Taalwetenschap in Artikelen, 19, 48-58. [pdf]

Kempen, Gerard & Pieter Huijbers (1983). The lexicalization process in sentence production and naming: indirect election of words. Cognition, 14, 185-209. [pdf]

Kempen, G.A.M. (1983). Natural-language facilities in information systems: asset or liability? In van Apeldoorn, J.H.F. (Ed.), Man and information technology: towards friendlier systems. Delft: Delft University Press. [pdf]

Kempen, Gerard (1983). Het artificiële-intelligentieparadigma. Ervaringen met een nieuwe methodologie voor cognitief-psychologisch onderzoek. In Raaijmakers, J., Hudson, P. & Wertheim, A. (Eds.), Metatheoretische aspekten van de psychonomie. Deventer: Van Loghum Slaterus. [pdf]

Kempen, Gerard & Eduard Hoenkamp (1982). Incremental sentence generation: implications for the structure of a syntactic processor. In: Horecky, J. (Ed.), Proceedings of the Ninth International Conference on Computational Linguistics, Prague, July 1982 (COLING82). Amsterdam: North-Holland. [pdf]

Van Wijk, Carel & Kempen, Gerard (1982). De ontwikkeling van syntactische formuleervaardigheid bij kinderen van 9 tot 16 jaar. Nederlands Tijdschrift voor de Psychologie, 37, 491-509. [pdf]

Van Wijk, Carel & Kempen, Gerard (1982).Syntactische formuleervaardigheid en het schrijven van opstellen. Pedagogische Studiën, 59, 126-136. [pdf]

Kempen, G. (1979). A study of syntactic bookkeeping during sentence production. In Ueckert, H., & Rhenius, D. (Eds.), Komplexe menschliche Informationsverarbeitung. Bern: Huber. [pdf]

Levelt, W.J.M. & Kempen, G. (1979). Language. In Michon, J.A., Eijkman, E.G.J., & de Klerk, L.F.W. (Eds.), Handbook of Psychonomics. Amsterdam: North-Holland. [pdf]

Thomassen, A.J.W.M. & Kempen, G. (1979). Memory. In Michon, J.A., Eijkman, E.G.J., & de Klerk, L.F.W. (Eds.), Handbook of Psychonomics. Amsterdam: North-Holland. [pdf]

Kempen, G. (1979). La mise en paroles. Aspects psychologiques de l’expression orale. Études de linguistique appliquée, 33, 19-28. [French translation of Kempen, G. (1977). Onder woorden brengen. Psychologische aspecten van expressief taalgebruik. Inaugural Address, June 10 1977, University of Nijmegen. Groningen: Wolters-Noordhoff.] [pdf]

Kempen, G. (1978). Sentence construction by a psychologically plausible formulator. In Campbell, R., & Smith, P. (Eds.), Recent advances in the psychology of language: Formal and experimental approaches. New York: Plenum Press. [pdf]

Kempen, G. (1977). Building a psychologically plausible sentence generator. In Seuren, P. (Ed.), Symposium on Semantic Theory. Nijmegen: Katholieke Universiteit, (Grammarij 9). [pdf]

Kempen, G. (1977). Conceptualizing and formulating in sentence production. In Rosenberg, S. (Ed.), Sentence production: Developments in research and theory. Hillsdale, N.J.: Erlbaum. [pdf]

Kempen, G. (1977). Man’s sentence generator: aspects of its control structure. In de Mey, M. et al. (Eds.). International workshop on the cognitive viewpoint. Ghent: Rijksuniversiteit Gent (Communication & Cognition). [pdf]

Kempen, G. & Maassen, B. (1977). The time course of conceptualizing and formulating processes during the production of simple sentences. Proceedings of the third Prague Conference on the Psychology of Human Learning and Development (July 1977). Prague: Institute of Psychology. [pdf]

Kempen, G. (1977). Wat is psycholinguïstiek? In Tervoort, B. (Ed.), Wetenschap en taal. Muiderberg: Continho.[pdf]

Kempen, G. (1976). Syntactic constructions as retrieval plans. British Journal of Psychology, 67, 149-160. [pdf]

Ulijn, J. & G. Kempen (1976). The role of the first language in second language reading comprehension: some experimental evidence. In Nickel, G. (Ed.), Proceedings of the 4th International Congress of Applied Linguistics, Vol. 1. Stuttgart: Hochschulverlag. [pdf]

Levelt, W.J.M. & Kempen, G. (1976). Taal. In: Michon, J.A., Eijkman, E.G.J. & de Klerk, L.F.W. (Eds.), Handboek der psychologie. Deventer: van Loghum Slaterus. [pdf]

Levelt, W.J.M. & Kempen, G. (1975). Semantic and syntactic aspects of remembering sentences: a review of some recent continental research. In: Kennedy, R.A. & Wilkes, A.L. (Eds.), Studies in long term memory. New York: Wiley. [pdf]

Kempen, Gerard (1970). Memory for word and sentence meanings: A set-feature model. PhD Dissertation, University of Nijmegen. [pdf]

Kempen, G.; Hermans, B.; Klinkum, A.; Brand M. & Verhaaren, F. (1969). The word-frequency effect and incongruity perception: Methodological artifacts? Perception and Psychophysics, 5, 161-162. [pdf]