TKACHENKO, T. M.; PROKOPENKO, I. O. Сalculation of maintenance of surface drainage roofing of a German manufacturer. Environmental safety and natural resources, [S. l.], v. 35, n. 3, p. 44–56, 2020. DOI: 10.32347/2411-4049.2020.3.44-56. Disponível em: https://es-journal.in.ua/article/view/213161. Acesso em: 26 jul. 2025.