Michele Gazzola is Lecturer in Public Policy and Administration at the School of Applied Social and Policy Sciences at Ulster University, UK. Federico Gobbo is Full Professor on the Special Chair of Interlinguistics and Esperanto by special appointment at the University of Amsterdam, the Netherlands. David Cassels Johnson is Associate Professor of Multilingual Education at the University of Iowa, USA, and Visiting Professor in the Center for Language Planning and Policy Studies at Shanghai International Studies University, China. Jorge Antonio Leoni de León is a Full Professor of Computational Linguistics at the School of Philology, Linguistics and Literature, University of Costa Rica in San José and director of the Institute of Linguistic Research (INIL).