The Treaty of Neuilly-sur-Seine dealt with Bulgaria as a Central Power of the First World War. It settled the borders over the territory that had been contested between Bulgaria, Turkey, the Kingdom of Serbs, Croats and Slovenes, and Greece. Bulgaria was forced to cede territory, including losing western Thrace to Greece.
Editors. "Peace of Neuilly between Allies and Bulgaria". The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=12743, accessed 03 March 2015.]