UMUKORO AKPO; AKPOILIH EMMANUEL ONORIODE. EVALUATION OF MOBILE COMMUNICATION NETWORK PERFORMANCE IN DELTA STATE, NIGERIA . International Journal of Modeling and Applied Science Research, Nigeria, v. 2, n. 2, 2023. Disponível em: https://cambridgeresearchpub.com/ijmasr/article/view/76.. Acesso em: 12 oct. 2025.