Khodosovtsev, A. Y., Darmostuk, V. V., Didukh, Y. P. and Pylypenko, I. O. (2019): “‘Verrucario viridulae-Staurotheletum hymenogoniae’, a new calcicolous lichen community as a component of petrophytic grassland habitats in the Northern Black Sea region”, Mediterranean Botany, 40(1), pp. 21–32. doi: https://doi.org/10.5209/MBOT.62891.