SANI DAN NOMAO, Harouna; BOUBACAR MAIKANO, Abdoulaye; SIDO, Mariama P.; BOUKAR, Makinta; MADOUGOU, Saïdou. 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, [S. l.], v. 10, n. 4, p. 765–782, 2022. DOI: 10.14738/aivp.104.12950. Disponível em: https://scholarpublishing.org/journals/index.php/EJAS/article/view/8227. Acesso em: 30 may. 2026.