SHISHKIN, M.A.; GUSEV, V.A.; SHERSTOBITOVA, N.P. Ecological and geochemical assessment of the soil in Perm. Perm Federal Research Centre Journal, [S. l.], n. 2, p. 48–57, 2020. DOI: 10.7242/2658-705X/2020.2.5. Disponível em: https://journal.permsc.ru/index.php/pscj/article/view/PSCJ2020n2p5. Acesso em: 14 may. 2026.