BOSDOUGANOV, I. A two-phase flow in a viscous medium. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 88, p. 239–254, 1996. Disponível em: https://ftl5.uni-sofia.bg/index.php/fmi/article/view/383. Acesso em: 4 dec. 2024.