MUSTAFA OMER, A. . Recent progress in sustainable development and environmentally friendly energy systems: Case of Sudan. Scientific Journal of Biological Sciences, [S. l.], v. 5, n. 1, p. 125-154, 2016. Disponível em: http://sjournals.com/index.php/sjbs/article/view/415. Acesso em: 22 jul. 2024.