Editors. "Spain agrees to the peace preliminaries at Vienna". The Literary Encyclopedia. First published 01 April 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=17314, accessed 18 May 2013.]
After the death of Tsarina Catherine I, Spain (who has no minister in Paris) submits to the peace preliminaries taking place at Vienna.