Tác giả: Olav Hackstein

​Joseph F. Eska is Professor of Language Sciences at Virginia Polytechnic Institute & State University, USA. His work focuses upon language change in the Celtic languages. He particularly works within the theoretical frameworks of Laryngeal Realism and Syntactic Cartography. Olav Hackstein is Professor and Chair in Historical and Indo-European Linguistics at the Ludwig-Maximilians University in Munich, Germany. His research interests focus on the historical morphology and syntax of the ancient Indo-European languages. Ronald I. Kim is Associate Professor in the Department of Older Germanic Languages of the Faculty of English at Adam Mickiewicz University, Poland. His research focuses on phonological and morphological change in the Indo-European languages, primarily Balto-Slavic, Iranian, Armenian, and Tocharian, as well as dialectology and language contact. Jean-François Mondon is Professor of World Languages who teaches both classical and modern Indo-European Languages at Minot State University, USA. His research is split between the writing of pedagogical material for ancient Indo-European languages and the application of the theoretical framework of Distributed Morphology to primarily Celtic language data.