ASSESSING THE PERFORMANCE OF GLOBAL SOLAR RADIATION EMPIRICAL EQUATIONS IN SOKOTO, NIGERIA USING METEOROLOGICAL PARAMETERS. Nigerian Journal of Technology, [S. l.], v. 37, n. 2, p. 358–364, 2018. DOI: 10.4314/njt.372.1666. Disponível em: https://nijotech.com/index.php/nijotech/article/view/1666. Acesso em: 19 apr. 2026.