Levykin, S. V., G. V. Kazachkov, I. G. Yakovlev, and D. A. Grudinin. “Steppe Ecosystem Self-Restoration on the Virgin Land Campaign Area in the Light of the Steppe Title Species Concept, Environmental and Conservative Significance of the Process”. Проблемы ботаники Южной Сибири и Монголии, Vol. 18, no. 1, July 2019, pp. 658-61, doi:10.14258/pbssm.2019139.