Birgit Anette Olsen is professor of Indo-European Linguistics at the Department of Nordic Studies and Linguistics at the University of Copenhagen, and previously leader of the five-year University of Copenhagen excellence programme Roots of Europe (2008–2013). She has published in particular about the Classical Armenian language and nominal word formation in Indo-European languages.

Michaël Peyrot Michaël Peyrot is post-doc researcher at the University of Vienna on Tocharian and Indo-European linguistics.

Georges-Jean Pinault is professor of linguistics at the Ecole pratique des hautes etudes, Paris.

Thomas Olander, PhD, DPhil, is an associate professor of Indo-European Studies, University of Copenhagen. He is the author of Proto-Slavic inflectional morphology: A comparative handbook (2015) and Balto-Slavic accentual mobility (2009).