TAYLOR, E.; RIVERA, J. Hydrogen fuel cell-powered drone ambulance for the emergency medical services. Future Energy, [S. l.], v. 1, n. 1, p. 6–11, 2022. DOI: 10.55670/fpll.fuen.1.1.9. Disponível em: https://fupubco.com/fuen/article/view/9. Acesso em: 8 nov. 2026.