GOPAL, R.; GHOSH, P. K. An Outfit for Improving Potability of Water in Snow-Bound Areas. Defence Science Journal, [S. l.], v. 41, n. 1, p. 39–43, 2013. DOI: 10.14429/dsj.41.4409. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/4409. Acesso em: 2 aug. 2025.