PAK, Vladimir Vasilievich. Numerical solution of the Stokes problem under free boundary by the modified projection gradient method. Computational Continuum Mechanics, Perm, Russia, v. 1, n. 1, p. 80–91, 2008. DOI: 10.7242/1999-6691/2008.1.1.8. Disponível em: https://journal.permsc.ru/index.php/ccm/article/view/CCMv1n1a8. Acesso em: 5 aug. 2026.