Iraida Кirilchuk. "FEATURES OF CALCULATION AND ANALYSIS OF EKOLOGY-EKONOMIC INDEX OF THE REGION ON THE EXAMPLE OF KURSK REGION." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Ecology, Economics, Education and Legislation (2018): 375-382. https://doi.org/10.5593/sgem2018/5.3/s28.047