1. Handbook for Cogeneration and Combined Heat and Power Plants;Boyce,2002
2. Dairy Waste Anaerobic Digestion Handbook: Options for Recovering Beneficial Products from Dairy Manure;Burke,2001
3. “Dairy Farm Energy Audit Summary, New York State.”;Energy Research and Development Authority,2003
4. Zhang, Z. (2007) “Lessons Learned on California Dairy Digesters.” PowerPoint presentation at the Power-Gen Renewable Energy and Fuels Conference, Las Vegas, March 6–8.