EN
A letter of Jan Hus to Hungarian prelates, unknown before and recorded in the manuscript 1994 held by the Regensburger Bischöfliche Zentralbibliothek (Holding Alte Kapelle) was found and presented by Stanislav Petr. The authenticity of the letter was disputed by Božena Kopičková and Anežka Vidmanová who concluded, on the basis of a false dating of the letter from the time of Hus´s vice-chancellorship in the winter semester 1409-1410, that the letter was just a rhetoric exercise of a student of Hus. Hus nevertheless was not the vice-chancellor of the Prague University in the time the letter was compiled, as the word rector was, in this one as well as in other cases, just a part of a set phrase rector et predicator capelle Bethlehem. By the way, a number of further indications testify Hus´ authorship of the Regensburg letter.