Bataineh, M., Refai, M., Abu-Dawwas, R. . and Al-Zoubi, K. . (2022) “Semi-commutativity of graded rings and graded modules”, Proyecciones (Antofagasta, On line), 41(6), pp. 1377-1395. doi: 10.22199/issn.0717-6279-4951.