Directorate General for Education and Culture; Directorate General Press and Communication (2006). Europeans and their Languages(PDF). Archived from the original(PDF) on 2016-04-14. Retrieved 2010-03-11.
Relazione della Commissione storico-culturale italo-slovena, Relazioni italo-slovene 1880-1956, "Capitolo 1980-1918"Archived 13 March 2018 at the Wayback Machine, Capodistria, 2000
web.archive.org
Directorate General for Education and Culture; Directorate General Press and Communication (2006). Europeans and their Languages(PDF). Archived from the original(PDF) on 2016-04-14. Retrieved 2010-03-11.
Relazione della Commissione storico-culturale italo-slovena, Relazioni italo-slovene 1880-1956, "Capitolo 1980-1918"Archived 13 March 2018 at the Wayback Machine, Capodistria, 2000
