Basic Rules:
- Constitution of Austria, 1929 (Art 8: General Reference – linguistic minorities)
- Treaty of Saint Germain of September 10th, 1919
- State Treaty on the reestablishment of independent Austria of May 15th, 1955
- Act on the Rights of Ethnic Groups, July 7th, 1976 ( BGB1. Nr. 396/1971)
Minorities/Lesser used languages: