1. Yingjun Ruan, Bill Batty, Weijun Gao, Noriyasu Sagara, Examination of the viability of co-generation for a small-scale housing development in Kitakyushu, Japan, in: Proc. International Housing Conference in Hong Kong 2004, Hong Kong, China, 2004.
2. Optimization of co-generation system for housing complex;Ruan;Journal of Environmental Engineering (Transactions of AIJ),2005
3. Development of Residential PEFC Cogeneration Systems at Osaka Gas;Higashiguchi,2005
4. Development of PEFC Co-generation System for Japanese Residential Market;Kobayashi,2005
5. Ballard helps to power the future in Japan: The historic launch of residential cogeneration systems, Report, Ballard Power Systems Inc, Japan, 2005. Available from: .