Editors. "The Peace of Cardan restores of Ulrich of Wurttemberg to his duchy". The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14528, accessed 21 December 2013.]
Ulrich of Wurttemburg's recent restoration to his duchy, after a period of exile of over fifteen years, is confirmed by the Peace of Cardan. The Lutheran negotiators demand of Ferdinand of Austria that he quash all charges brought against the Schmalkaldic League in the imperial chamber court.