Richard D. Janda is currently Visiting Scholar in French and Italian at Indiana University Bloomington, USA, but his teaching spans 11 universities in 9 US states. He is author or editor of over 75 publications, including The Handbook of Historical Linguistics (Wiley Blackwell, 2003).
Brian D. Joseph is Distinguished University Professor of Linguistics and The Kenneth E. Naylor Professor of South Slavic Linguistics at The Ohio State University, USA. He has written and edited numerous books and published over 280 articles. He served as editor of the journal Language from 2002 - 2009, and is currently co-editor of the Journal of Greek Linguistics.
Barbara S. Vance is Associate Professor of Linguistics and Associate Professor of French Linguistics at Indiana University Bloomington, USA. She is the author of Syntactic Change in Medieval French (1997) and is a specialist in the historical syntax of French and Occitan.