In 2002, he received an award from the Croatian Academy of Sciences and Arts for a lasting contribution to philology. In 2006, he became an associate member of the same institution and was promoted into a full member in 2012.[3]
He has published more than 100 papers in Croatian and foreign-language journals and translated various works from Latin, Ancient Greek, Lithuanian, Hittite, Old and modern Irish, Welsh, and English.
Linguistics
A Theory of Textual Reconstruction in Indo-European Linguistics (Frankfurt a/M & New York: Peter Lang, 1996) ISBN3-631-49751-2
Kultura i književnost Hetita [Hittite Culture and Literature] (Zagreb; Matica hrvatska, 2000) ISBN953-15-0548-9
Uvod u poredbenu lingvistiku [An Introduction to Comparative Linguistics] (Zagreb: Matica hrvatska, 2001) ISBN953-150-612-4
Hrvatski enciklopedijski rječnik [Encyclopedic Dictionary of Croatian], co-edited with Ljiljana Jojić, Vladimir Anić, et al. (Zagreb: Novi Liber, ¹2002, ²2004–2005) ISBN953-6045-21-4
Gender in Indo-European (Heidelberg: Carl Winter, 2004) ISBN3-8253-1666-1
A Reader in Comparative Indo-European Religion (Zagreb: University of Zagreb, 2010)
Etimološki rječnik hrvatskoga jezika: 1. svezak (A-Nj), 2. svezak (O-Ž) [Etymological Dictionary of Croatian Language], edited, co-authored with Tijmen Pronk, Dubravka Ivšić, Dunja Brozović Rončević (Zagreb: Institut za hrvatski jezik i jezikoslovlje, 2016–2021) ISBN978-953-7967-51-2, ISBN978-953-7967-85-7
Slavic Nominal Word-Formation: Proto-Indo-European Origins and Historical Development (Heidelberg: Carl Winter, 2014) ISBN978-3-8253-6335-2
Lingvistička povijest Europe [Linguistic History of Europe] (Zagreb: Matica hrvatska, 2016) ISBN9789533410616
An Areal Typology of Agreement Systems (Cambridge: Cambridge University Press, 2018) ISBN978-1-108-42097-6
Translations
Harfa sa sjevera. Iz irske književnosti (Zagreb: Antibarbarus, 1995) ISBN953-6160-25-0
Koje je vrijeme? Suvremena irska pripovijetka (Zagreb: Matica hrvatska, 1997) ISBN953-6014-96-3
Kamen kraljeva. Srednjovjekovne irske sage (Zagreb: Ex Libris, 2004) ISBN953-6310-35-X
Sveti Patrik. Djela / Opera (Confessio sancti Patricii episcopi; Epistole ad milites Corotici) (Zagreb: Antibarbarus, 2004) ISBN953-6160-91-9