SANI DAN NOMAO, Harouna, Abdoulaye BOUBACAR MAIKANO, Mariama P. SIDO, Makinta BOUKAR, and Saïdou MADOUGOU. “Study of Four (4) Semi-Empirical Models for Estimating Direct Radiation from the Sun and Modeling for Application to the Solar Thermodynamic System”. European Journal of Applied Sciences 10, no. 4 (August 31, 2022): 765–782. Accessed April 29, 2024. https://journals.scholarpublishing.org/index.php/AIVP/article/view/12950.