Estimation of Least-Cost Planning Sequence for Labeled Petri Nets
ZHOU Guangrui, XU Shulin, GUO Yiyun, LU Faming, YUE Hao
Journal of Frontiers of Computer Science and Technology . 2021, (7): 1350 -1358 .  DOI: 10.3778/j.issn.1673-9418.2011035