Syntaxonomy of chalk outcrop vegetation of the order Thymo cretacei-Hyssopetalia cretacei - Didukh, Yakiv P. (Hacquetia, 2018)
Keywords: Central Russian Upland; flora rodu Hyssopus; Hyssopus flora; klasifikacija alpskih rastlin; lowered alpine plants classification; Srednjerusko višavje