Yongfeng Liu Jianwei Yang Hongsen Tian Qinghui Zhou Aihua Zhu Study on CAD for the Complex Combustion Structure in Engine Based on PRO/E. 1145-1148 2011 ICDMA http://doi.ieeecomputersociety.org/10.1109/ICDMA.2011.282 conf/icdma/2011 db/conf/icdma/icdma2011.html#LiuYTZZ11