Zhong-Hua Su Qing-Shan Jia Chen Song Ordinal Optimization-Based Multi-energy System Scheduling for Building Energy Saving. 251-259 2011 ICIC (2) http://dx.doi.org/10.1007/978-3-642-25944-9_33 conf/icic/2011-2 db/conf/icic/icic2011-2.html#SuJS11