ROUZKARD, F. Common fixed point theorems for two pairs of self-mappings in complex-valued metric spaces. Eurasian Mathematical Journal, [S. l.], v. 10, n. 2, p. 75–83, 2019. DOI: 10.32523/2077-9879-2019-10-2-75-83. Disponível em: https://emj.enu.kz/index.php/main/article/view/148. Acesso em: 22 sep. 2026.