For citations:

Chibilyov (jr.) A.A., Chibilyov A.A. CURRENT STATE AND PROBLEMS OF MODERNIZATION OF ECOLOGICAL FRAMEWORK OF REGIONS OF THE STEPPE ZONE OF EUROPEAN RUSSIA. South of Russia: ecology, development. 2019;14(1):117-125. (In Russ.) https://doi.org/10.18470/1992-1098-2019-1-117-125