1. Linguistics and Basque Studies, University of the Basque Country (UPV/EHU) , Unibertsitateko ibilbidea 5 , 01006, Vitoria-Gasteiz , the Basque Country
2. Institute of Linguistics, University of Bern , Laenggassstrasse 49 , 3012, Bern , Switzerland
3. Modern Languages and Basque Studies, University of Deusto , Unibertsitate Etorb. 24 , 48007, Bilbao , The Basque Country