SIHWANINGRUM, I.; SAWANO, Y. Weak and strong type estimates for fractional integral operators on Morrey spaces over metric measure spaces. Eurasian Mathematical Journal, [S. l.], v. 4, n. 1, p. 76–81, 2013. Disponível em: https://emj.enu.kz/index.php/main/article/view/501. Acesso em: 20 aug. 2025.