مؤلف: W. Leo Wetzels

Leo Wetzels is Professor Emeritus of the VU University Amsterdam, The Netherlands, where he held the chair of Romance languages and Amazon languages until July 2017. Since September 2017 he acts as a visiting Professor at the Federal University of Ceará in Fortaleza, Brazil and, since January 2019, as an invited researcher at the EHESS in Paris, France. He is Editor-in-Chief of Probus, International Journal of Romance Linguistics. João Costa is Professor of Linguistics at the Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa, Portugal. He served as Secretary of State of Education in the Portuguese Government (2015-2019). Sergio Menuzzi is Professor at the Department of Classical and Vernacular Letters, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil. He is also the current director of the Faculty of Letters in the same university, and has been a researcher of the National Council of Research (CNPq) since 2004.