Durk Gorter is Ikerbasque research professor in the Department of Education Sciences at the University of the Basque Country, UPV/EHU, Spain. He conducts research on multilingual education, European minority languages and linguistic landscapes; topics on which he has published widely.

Jasone Cenoz is Professor of Research Methods in Education at the University of the Basque Country UPV/EHU, Spain, and a member of the advisory committee of the Organization of Ibero-American States (OEI). Her research focuses on multilingual education, bilingualism and multilingualism. She has published extensively and has presented her work at numerous international conferences and seminars.