1. ACAP, Parque Automóvel em 2006, 2006, Associação Automóvel de Portugal.
2. Ally, J., Pryor, T., 2006. Life cycle assessment of the diesel, natural gas, and hydrogen bus transportation systems in Western Australia. In: Proceedings of the Alternative Transport Energies Conference. Perth, Western Australia, July 10.
3. Baptista, P., Camus, C., Silva, C., Farias, T., 2009. Impact of the introduction of electric based vehicles in Sao Miguel Island. In: Proceedings of the 2nd International Symposium on Engineering Systems. MIT, Cambridge, Massachusetts, June 1–14.
4. Plug-in hybrid fuel cell vehicles market penetration scenarios;Baptista;International Journal of Hydrogen Energy,2010
5. In energy and CO2 emissions scenarios of introducing new vehicle technologies in the Portuguese fleet;Baptista,2010