Maduka NC, Okafor CS, Archibong EI. INVESTIGATION OF QUALITY OF SERVICE (QoS) OF GSM NETWORK PROVIDERS AT FEDERAL UNIVERSITY, GUSAU, ZAMFARA STATE. NJP [Internet]. 2021 Nov. 30 [cited 2024 Sep. 19];30(2):78-85. Available from: https://njp.nipngr.org/index.php/njp/article/view/97