1. D. Elkaim, in Abstracts of 2000 Fuel Cell Seminar, p. 491, Portland, OR (Oct 2000).
2. K. Shindo, T. Ouki, A. Fuju, O. Tajima, S. Yamamoto, T. Susai, and K. Tajima, in Abstracts of 2000 Fuel Cell Seminar, p. 492, Portland, OR (Oct 2000).
3. M. Sperry and M. Torpey, in Abstracts of 2000 Fuel Cell Seminar, p. 481, Portland, OR (Oct 2000).
4. http://www.arb.ca.gov/regact/zev2001/StaffResp.PDF