1. Barbarisi, O., Canaletti, R., Gielmo, L., Gosso, M. and Casca, F. (2002). State of charge estimator for NiMH batteries. Proc. 41st IEEE Conf. Decision and Control, 2, 1739–1744.
2. Bono, T., Kizaki, M., Mizuno, H., Nonobe, Y., Takahashi, T., Matsumoto, T. and Kobayashi, N. (2009). Development of new Toyota FCHV-ADV. fuel cell system. Proc. 2009 World Cong., SAE Paper No. 2009-01-1003.
3. Campbell, C. J. and Laherrere, J. H. (1998). The End of Cheap Oil. Scientific American. 78–83.
4. Deffeyes, K. (2001). Hubbert’s Peak: The Impending World Oil Shortage. Princeton University Press. New Jersey.
5. Do, K. (2004). A Dynamic Electro-Thermal Model of Double Layer Supercapacitors for HEV Powertrain Applications. M. S. Thesis. Ohio State University.