Romansh language published in 1703, though either the Catholic variety of Sursilvan or Putèr was more commonly used there until the 20th century. In the 16th century, the language border between Romansh and German largely stabilized, and it remained almost unchanged until the late 19th century. During this period, only isolated areas became German-speaking, mainly a few villages around Thusis and the village of Samnaun. In the case of Samnaun, the inhabitants adopted the Bavarian dialect of neighboring Tyrol, making Samnaun the only municipality of Switzerland where a Bavarian dialect is spoken. The Vinschgau in South Tyrol was still Romansh-speaking in the
Romansh language Sursilvan and Engadinese as the languages of ballots, a referendum was launched to amend the relevant article. In the referendum, which took place on June 10, 2001, 65% voted in favor of naming Rumantsch Grischun the only official Romansh variety of the Canton. Opponents of Rumantsch Grischun such as Renata Coray and Matthias Grünert argue, however, that if only those municipalities with at least 30% Romansh speakers were considered, the referendum would have been rejected by 51%, with an even larger margin if only those with at least 50% Romansh speakers were considered. They thus interpret the results as the