Editors. "The Schmalkaldic League begins to disintegrate". The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14746, accessed 23 May 2013.]
The Schmalkaldic League of German Protestant princes, currently at war with the Emperor Charles V, begins to disintegrate as its leaders are unable to decide on a coherent military strategy.