1. W. Borchers Process of Transforming Chemical Energy of Fuel into Electrical Energy , U.S. Patent 567, 959, September 22, 1896
2. K. Kordesch G. Simader Fuel Cells and Their Applications , VCH Verlagsgesellschaft: Weinheim, Germany, 1996
3. W. Vielstich, A. Lamm, H.A. Gasteiger, Eds., Handbook of Fuel Cells: Fundamentals, Technology and Applications ; Wiley: Chichester, U.K., 2003
4. J. Larminie A. Dicks Fuel Cell Systems Explained, 2nd Ed. , Wiley: Chichester, UK., 2003
5. R.P. O'Hayre S.W. Cha W. Colella F.B. Prinz Fuel Cell Fundamentals , Wiley: New York, 2006