BEZSMERTNA, O.O., O.V. VASHEKA, and S.P. MASHKOVSKA. 2012. “Representation of Autochthonous Species of Division Pоlypodiophyta in Ukraine Botanical Gardens and Arboretums”. CHORNOMORSKI BOTANICAL JOURNAL 7 (3): 230-37. https://www.cbj.kspu.edu/index.php/cbj/article/view/497.