@conference {252,
	title = {Economizer Control Using Mixed Air Enthalpy},
	booktitle = {the 7th International Conference of Enhanced Building Operations},
	series = {7th},
	year = {2007},
	month = {2007},
	address = {San Francisco, CA},
	author = {Jingjuan Feng and Mingsheng Liu and Xiufeng Pang}
}
