VARGAS SOLANO, Édgar; PIÑEROS CASTRO, Y. Energías limpias y sostenibles. EXPEDITĬO, [S. l.], n. 7, 2011. Disponível em: https://revistas.utadeo.edu.co/index.php/EXP/article/view/733. Acesso em: 24 jun. 2022.