B. A. Maiyama, M. Momoh2, M. Musa, G. M. Argungu, S. Abdullahi, and M. B. Abdullahi. “Design and Performance Evaluation of Wind-Solar PV Energy System for Kola Village at Birnin Kebbi, Nigeria”. International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE, vol. 4, no. 1, Jan. 2018, pp. 72-78, doi:10.7324/IJASRE.2018.32589.