The Battle of Poltava was the decisive victory of Peter I of Russia over Charles XII of Sweden in the most famous of the battles of the Great Northern War.
Editors. "Battle of Poltava". The Literary Encyclopedia. First published 01 February 2010; last revised 30 November -1.
[http://www.litencyc.com/php/stopics.php?rec=true&UID=4173, accessed 26 April 2015.]