КРИХІВСЬКИЙ, М. В.; ТИМКІВ, Д. Ф. NUMERICAL INDICATORS OF ECOLOGICAL SECURITY LEVEL. Oil and Gas Power Engineering, [S. l.], n. 2(20), p. 163–173, 2013. Disponível em: https://nge.nung.edu.ua/index.php/nge/article/view/270. Acesso em: 30 apr. 2024.