| Willis, David. 2014. Newid ac amrywiaeth mewn Cymraeg cyfoes ['Variation and change in contemporary Welsh']. In Delyth Prys (ed.), Ysgrifau ar ieithyddiaeth a geiriaduraeth Gymraeg. Carmarthen: Coleg Cymraeg Cenedlaethol, 84-102. |
| Willis, David. 2013. Modality, negation and negative concord: Ongoing change in northern Welsh dialects. Paper presented at the Welsh Linguistics Seminar, University of Wales, July 2013. [downloadable PDF] |
| Willis, David. 2013. Microvariation in Welsh pronouns and agreement. Paper presented at the Towards a Theory of Syntactic Variation, Bilbao, June 2013. [downloadable PDF] |
| Willis, David. 2013. Dialect syntax as a testbed for models of innovation and change. Paper presented at LingSoc, University of Cambridge, May 2013. [downloadable PDF] |
| Willis, David. 2012. The rise and fall of agreement in the Welsh pronomoinal system. Poster presented at Diachronic Generative Syntax (DiGS14), University of Lisbon, July 2012. [downloadable PDF] |
| Update on the Syntactic Atlas of Welsh Dialects (PDF). Table 1 (separate PDF). Paper given at the Seventeenth Welsh Syntax Seminar, University of Wales, Gregynog, July 2010. |
| Willis, David, Anne Breitbarth & Christopher Lucas. 2013. Comparing diachronies of negation. In David Willis, Anne Breitbarth & Christopher Lucas (eds.), The history of negation in the languages of Europe and the Mediterranean, volume 1: Case studies. Oxford: Oxford University Press, 1-50. [downloadable PDF] |
| Willis, David. 2013. The history of negation in the Brythonic Celtic languages. In David Willis, Anne Breitbarth & Christopher Lucas (eds.), The history of negation in the languages of Europe and the Mediterranean, volume 1: Case studies. Oxford: Oxford University Press, 239-98. [downloadable PDF] |
| Willis, David. 2013. The history of negation in the Slavonic languages. In David Willis, Anne Breitbarth & Christopher Lucas (eds.), The history of negation in the languages of Europe and the Mediterranean, volume 1: Case studies. Oxford: Oxford University Press, 341-98 |
| Breitbarth, Anne, Christopher Lucas & David Willis. 2013. Incipient Jespersen's cycle: The (non-)grammaticalization of new negative markers. In Jürg Fleischer & Horst J. Simon (eds.), Sprachwandelvergleich / Comparing diachronies. Tübingen: Niemeyer, 143-64 |
| Lucas, Christopher & David Willis. 2012. Never again: The multiple grammaticalization of never as a marker of negation in English. English Language and Linguistics 16, 459-85. |
| Willis, David. 2012. Negative polarity and the quantifier cycle: Comparative perspectives from European languages. In Pierre Larrivée & Richard P. Ingham (eds.), The evolution of negation: Beyond the Jespersen cycle, 313-56. Berlin: Mouton de Gruyter. |
| Willis, David. 2011. A minimalist approach to Jespersen's cycle in Welsh (PDF file). In Dianne Jonas, John Whitman & Andrew Garrett (eds.), Grammatical change: Origins, natures, outcomes, 93-119. Oxford: Oxford University Press. |
| Motivating the emergence of new markers of sentential negation: The case of Welsh ddim. Diachronica 27 (2010): 110-56. |
| Never again: the regrammaticalization of never as a marker of sentential negation in English. New Reflections on Grammaticalization 4, Catholic University of Leuven, Belgium, July 2008. [Powerpoint presentation] |
| Dadansoddi datblygiad negyddu yn y Gymraeg: Rhai problemau wrth ddehongli testunau Cymraeg Canol a Chymraeg Diweddar. Paper presented at Datblygiad yr Iaith network meeting, British Academy. |
| Analysing the development of negation in Welsh: Some problems in interpreting Middle and Modern Welsh texts [English version of the above]. |
| English–Welsh language contact in the realm of negation. Paper presented at the Transmission and Diffusion Congress, Radboud University Nijmegen. |
| Willis, David. 2006. Negation in Middle Welsh (abstract), Studia Celtica 40: 63-88. |
| Willis, David. 2015. Exaptation and degrammaticalization within an acquisition-based model of abductive reanalysis (PDF). Draft ms., January 2015. To appear in: Muriel Norde & Freek Van de Velde (eds.), Exaptation in language change. Amsterdam: John Benjamins. |
| Willis, David. 2011. The limits of resumption in Welsh wh-dependencies. In Alain Rouveret (ed.), Resumptive pronouns at the interfaces, 189-222. Amsterdam: John Benjamins. |
| Willis, David. 2011. Reconstructing last week's weather: Syntactic reconstruction and Brythonic free relatives (abstract). Journal of Linguistics 47, 407-46. |
| Willis, David. 2010.Degrammaticalization and obsolescent morphology: Evidence from Slavonic (abstract).In Katerina Stathi, Elke Gehweiler & Ekkehard König (eds.), Grammaticalization: Current views and issues , 151-77. Amsterdam: John Benjamins. |
| Old and Middle Welsh (PDF file). In The Celtic languages, edited by Martin Ball and Nicole Müller. London: Routledge, 117-60. |  |
| Celtic and English language contact and shift. Slides from my course at the 2nd HiSoN Summer School, University of Bristol, August 2008. |
| Willis, David. 2007. Specifier-to-head reanalyses in the complementizer domain: Evidence from Welsh (abstract), Transactions of the Philological Society 105, 432-80. |
| Willis, David. 2007. Syntactic lexicalization as a new type of degrammaticalization (abstract), Linguistics 45, 271-310. |
| Willis, David. 2006. Against N-raising and NP-raising analyses of Welsh noun phrases (abstract) Lingua 116, 1807-39. |
| Willis, David. 2005. Lexical diffusion in Middle Welsh: The distribution of /j/ in the law texts (abstract) Journal of Celtic Linguistics 9, 105-33. |
| Willis, David. 2000. Verb movement in Slavonic conditionals. In Diachronic syntax: Models and mechanisms, edited by Susan Pintzuk, George Tsoulas and Anthony Warner. Oxford: Oxford University Press, 322-48. |
| Willis, David; and Mittendorf, Ingo. 2003. Ein historisches Korpus der kymrischen Sprache. In Keltologie heute: Themen und Fragestellungen, edited by Erich Poppe. Münster: Nodus, 135-42. |
| Willis, David. 2002. Review of The syntax of verb-initial languages, edited by Andrew Carnie and Eithne Guilfoyle. New York: Oxford University Press. Journal of Linguistics 38, 710-12. |
| Willis, David. 2000. On the distribution of resumptive pronouns and wh-trace in Welsh. Journal of Linguistics 36, 531-73. |
| Willis, David. 2000. Review of Parameters of morphosyntactic change, edited by Ans van Kemenade and Nigel Vincent. Cambridge: Cambridge University Press. Journal of Linguistics 36, 201-10. |
| Willis, David. 1999. ‘The structure of Old Russian periphrastic verbal constructions’. In Crossing boundaries: Advances in the theory of Central and Eastern European languages, edited by István Kenesei. Amsterdam: John Benjamins, 45-65. |
