DUBYNA, D.V., P.A. TIMOSHENKO, and T.V. DVORETSKY. 2010. “Ecological and Floristic Features of Festucetea Vaginatae Communities in Ukraine and Perspectives of Its Conservation”. CHORNOMORSKI BOTANICAL JOURNAL 5 (4): 491-501. https://www.cbj.kspu.edu/index.php/cbj/article/view/596.