BERNTSEN, G. . Case Study: Fuel Cell Micro Grid Operation at the 2004 Democratic National Convention. Distributed Generation & Alternative Energy Journal, [S. l.], v. 20, n. 4, p. 70–77, 2005. DOI: 10.13052/dgaej2156-3306.2047. Disponível em: https://journals.riverpublishers.com/index.php/DGAEJ/article/view/14353. Acesso em: 22 apr. 2026.