ABBAS, Mujahid; RAKOČEVIĆ, Vladimir; NOOR, Zahra. Perov multivalued contraction pair in rectangular cone metric spaces. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, [S. l.], v. 8, n. 3, p. 484–501, 2021. DOI: 10.21638/spbu01.2021.310. Disponível em: https://math-mech-astr-journal.spbu.ru/article/view/11828. Acesso em: 18 may. 2024.