LOVRIEN, N. . Results of a Hydrogen Pilot Program. Distributed Generation & Alternative Energy Journal, [S. l.], v. 22, n. 3, p. 6–18, 2007. DOI: 10.13052/dgaej2156-3306.2231. Disponível em: https://journals.riverpublishers.com/index.php/DGAEJ/article/view/14241. Acesso em: 14 may. 2026.