ロマンシュ語
Shortly before retiring from his teaching career in 1983, the Lia Rumantscha ("Romansh League") asked him to create a common written language for the five main varieties of the Romansh language. In April 1982, after only six months of intense work, he presented his guidelines for the common written language. This was followed by lively discussions and journeys to the whole Romansh language area, where he tirelessly promoted the common written language and was able to allay many reservations. As a result, the Romansh language has been publicly recognised to a much greater extent in Switzerland and a new vitality entered the Romansh-speaking area which also included Ladin.