1987:
Going Romance Colloquium, Rijksuniversiteit Utrecht.
1988:
Linguistics Association of Great Britain Conference, Durham.
Österreichische Linguistentagung, Salzburg.
1990:
Società Italiana di Glottologia, Convegno sulla linguistica
comparativa, Bologna.
1991:
Going Romance Colloquium, Rijksuniversiteit Utrecht.
1994:
Third Diachronic Generative Syntax Conference, Vrije Universiteit,
Amsterdam.
1995:
Fourth Diachronic Generative Syntax Conference, Université du
Québec à Montréal.
1999:
Deutsche Gesellschaft für Sprachwissenschaft, Universität
Konstanz.
2000:
Convegno di Dialettologia, Pisa.
NP/DP Conference, Antwerpen.
X Coloquio de Gramática Generativa, Alcalá de Henares.
Società Italiana di Glottologia, Convegno ‘I modelli in
linguistica’, Macerata.
2001:
Romanistentag, München.
Going Romance Colloquium, Universiteit van Amsterdam.
2002:
Cinquièmes Journées Linguistiques Nationales, Linguistic
Society of Morocco, Rabat.
Seventh Diachronic Generative Syntax Conference, Universitat de Girona.
2003:
Deutsche Gesellschaft für Sprachwissenschaft, Universität
München.
2004:
Going Romance Colloquium, Universiteit van Leiden.
2005:
Conference The structure of parametric variation, University of
Newcastle.
2006:
Guest lecture, Glow Summer School, Stuttgart.
Sociedad Española de Linguïstica, Madrid.
2007:
3rd International Conference on Modern Greek Dialects and Linguistic
Theory, Nicosia, Cyprus.
Società Italiana di Glottologia, Convegno ‘Lingue, ethnos e
popolazioni: evidenze linguistiche, biologiche e culturali’, Verona.
2009:
Variation and Change in the Romance and Germanic NP/DP Conference,
Universiteit van Amsterdam.
Eleventh Diachronic Generative Syntax Conference, Universidade de
Campinas, Brazil.
International Conference for Historical Linguistics, Radboud
Universiteit Nijmegen.
2011:
International Workshop on Proto-Indoeuropean Syntax and its development, Aristotle University, Thessaloniki.
Invited lecturer at international Summer Schools
1993: Melbu (Norway)
1997: Rabat (Morocco)
1999: Lesbos (Greece)
2009: Kausani (India)