1. Akyildiz I, Su W, Sankarasubramaniam Y, Cayirci E. A survey of sensor networks. IEEE Communications Magazine. 2002;40:102-114
2. Ritchie G. Recent developments and likely advances in lithium rechargeable batteries. Journal of Power Sources. 2006;136(2):285-289
3. Tarascon J, Armand M. Issues and challenges facing rechargeable lithium batteries. Nature. 2004;414(7):359-367
4. Barbir F. PEM Fuel Cells: Theory and Practice. New York: Academic Press; 2005
5. O’Hayre R, Cha S, Colella W, Prinz F. Fuel Cell Fundamentals. New York: Wiley; 2005