Nwokolo S, Ogbulezie J. Modeling the influence of cloudiness on diffuse horizon-tal irradiation under various sky conditions in Nigeria. IJPR [Internet]. 2017 Oct. 10 [cited 2024 Apr. 28];5(2):91-100. Available from: https://www.sciencepubco.com/index.php/IJPR/article/view/8312