Jens Elmegård Rasmussen, D.Phil, is Associate Professor at the University of Copenhagen. 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).