UMOH, E. S. Some Applications of Partial Derivatives on Renewable Energy for Sustainable Development. Journal of Chemical, Mechanical and Engineering Practices (JCMEP), [S. l.], v. 5, n. 1-3, p. 28–32, 2015. Disponível em: http://icidr.org.ng/index.php/Jcmep/article/view/1103. Acesso em: 19 sep. 2024.