KOEHLER, T. . Fuel Cells in Backup Power Applications. Distributed Generation & Alternative Energy Journal, [S. l.], v. 21, n. 2, p. 65–79, 2006. DOI: 10.13052/dgaej2156-3306.2124. Disponível em: https://journals.riverpublishers.com/index.php/DGAEJ/article/view/14331. Acesso em: 14 may. 2026.