V.L. MAKAROV; GAVRILYUK, I. P. The fictitious domain method and homotopy as a new alternative for multidimensional partial differential equations in domains of any shape. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 72, n. 2, p. 191–208, 2020. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1101. Acesso em: 5 dec. 2025.