Didukh, Yakiv, Iuliia Vasheniak, and Olga Chusova. 2021. “Stipo Pulcherrimae-Festucetalia Pallentis Pop 1968 of Calcareous Petrophytic Steppes in Ukraine”. Hacquetia 20 (2):303–325. https://doi.org/10.2478/hacq-2021-0004.