1. Linden D, Reddy TB (2002) Handbook of batteries, 3rd edn, vol. 23, p 1
2. Crompton TR (2000) Battery reference book, 3rd edn, vol. 18, p. 5
3. Francia C, Maja M, Spinelli P (2001) J Power Sources 95:119
4. Bui N, Mattesco P, Simon P, Steinmetz J, Rocca E (1997) J Power Sources 67:61
5. Hibbins SG, Timpano FA, Zuliani DJ (1996) US Patent 5,547,634