1. Direct Fuel Cell Experience on Renewable Biogas
2. Evaluation of Combined Heat and Power Technologies for Wastewater Facilities;Brown,2010
3. M. Noponen, T. Hottinen, C.E. Sandstrom, WFC20 Biogas Unit Operation, Biogas Workshop, Lund, presentation, 2011.
4. Emissions of Greenhouse Gases in the United States 2009;Holtberg,2011
5. Opportunities for Combined Heat and Power at Wastewater Treatment Facilities:Market Analysis and Lessons from the Field;U.S. Environmental Protection Agency Combined Heat and Power Partnership,2011