中国科学院数学与系统科学研究院期刊网
Symbolic Computation of Partial Orders on the Finite Set
ZHANG Shengrong, LI Yongbin, ZI Junwei, Luo Mengyu
Journal of Systems Science and Mathematical Sciences . 2021, (12): 3342 -3350 .  DOI: 10.12341/jssms21437