KOVIN, V.S.; PANOV, P.V.; PETROVA, R.I. Subsurface users enterprises and contests for the election of the mayor. Perm Federal Research Centre Journal, [S. l.], n. 3, p. 38–43, 2020. DOI: 10.7242/2658-705X/2020.3.4. Disponível em: https://journal.permsc.ru/index.php/pscj/article/view/PSCJ2020n3p4. Acesso em: 14 may. 2026.