1. Barbarych, A. I., ed. 1977. Geobotanical Zoning of the Ukrainian SSR [Геоботанічне районування Української РСР]. Naukova dumka, Kyiv, 1–305. [in Ukrainian].
2. Baumann, M., Kamp, J., Pötzschner, F., Bleyhl, B., Dara, A., Hankerson, B., Prishchepov, A. V., Schierhorn, F., Müller, D., Hölzel, N., Krämer, R., Urazaliyev, R., Kuemmerle, T. 2020. Declining human pressure and opportunities for rewilding in the steppes of Eurasia. Diversity and Distributions, 26(9), 1058–1070. DOI: https://doi.org/10.1111/ddi.13110.
3. Bondarchuk, V. G. 1949. Geomorphology of the UkrSSR [Геоморфологія УРСР]. Radianska shkola, Kyiv, 1–243. [in Ukrainian].
4. Hobohm, C., Janišová, M., Vahle, H-C. 2021. Development and future of grassland ecosystems: Do we need a paradigm shift? In: Hobohm, C., ed. Environmental Challenges and Solutions. Springer, Cham, 329–359. DOI: https://doi.org/10.1007/978-3-030-57710-0_14.
5. Iosypchuk, A. 2019. First data on the spider fauna (Araneae) of the National Nature Park ‘Kamianska Sich’ (South Ukraine). Biology: From a Molecule Up to the Biosphere (Kharkiv, November 27–29, 2019): proceedings of the 14th international young scientists’ conference. V. N. Karazin Kharkiv Natonal University, Kharkiv, 169–171.