Yangdong Ye Hongxing Lu Junxia Ma Limin Jia Uncertain Temporal Knowledge Reasoning of Train Group Operation Based on Extended Fuzzy-Timing Petri Nets. 59-64 2007 ICFIE http://dx.doi.org/10.1007/978-3-540-71441-5_7 conf/icfie/2007 db/conf/icfie/icfie2007.html#YeLMJ07