Protopopova, V. V. ., Y. P. Didukh, V. S. Tkachenko, M. V. Shevera, O. Kucher, L. V. Zavialova, and A. P. Biatov. “Grindelia Squarrosa (Pursh) Dunal in Ukraine: Current Distribution and Ecological and Coenotic Peculiarities”. Hacquetia, vol. 20, no. 2, Apr. 2021, pp. 263–272, doi:10.2478/hacq-2021-0014.