“Ukrainian Flora Checklist. 16: Families Apocynaceae (incl. Asclepiadaceae), Gentianaceae and Rubiaceae (incl. Theligonaceae) (Gentianales, Angiosperms)”. 2025. CHORNOMORSKI BOTANICAL JOURNAL 21 (4): 299-329. https://doi.org/10.32999/ksu1990-553X/2025-21-4-1.