SHEVERA, M.V., ORLOV О.О., O.D. VOLUTSA, and R.YA. KISH. 2020. “Rudbeckia Triloba (Asteraceae), a New Alien Species in Ukrainian Flora”. CHORNOMORSKI BOTANICAL JOURNAL 16 (2): 135-43. https://doi.org/10.32999/ksu1990-553X/2020-16-2-3.