Editors. "Protestants break up the Diet of Ratisbon". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15651, accessed 23 May 2013.]
A meeting of the Diet of Ratisbon collapses when Protestant representatives angrily deny the right of the Catholic majority to bind the minority. This protest comes in response to Maximilian of Bavaria's annexation the previous year of the predominantly Protestant imperial city of Donauwörth, on the orders of the imperial Aulic council.