M. F. Isa, H. S. Bayel, M. Bello, and J. Aidan, “Design and Sizing of an Off-Grid Solar Photovoltaic (PV) System for an Office Unit at Modibbo Adama University, Yola-Nigeria”, NJP, vol. 35, no. 4, pp. 91–100, Jul. 2026, doi: 10.62292/njp.v35i4.2026.630.