Negru, Leontin. “Ethnic Minorities at the Lower Danube and the Soviet Ultimatum (August 23, 1939 - June 28, 1939)”. The Annals of "Dunarea de Jos" University of Galati. Fascicle XIX, History 4 (October 31, 2005): 267-276. Accessed April 28, 2024. https://www.gup.ugal.ro/ugaljournals/index.php/history/article/view/908.