Coutts, D. ., Hovis, G. ., Thomas, J. ., & Wu, T. . (1997). H2fuel Bus Project Hazard Analysis Operations, Maintenance and Storage. 55 p.

Coutts, D. ., & Thomas, J. . (1999). Safety Evaluation and Demonstrated Results for a Hydrogen Fueled Transit Bus. 83-92 (682 p.).

Coutts, D. ., Thomas, J. ., Hovis, G. ., & Wu, T. . (1997). Safety Evaluation of a Hydrogen Fueled Transit Bus. 73-98 (546 p.).