TY - JOUR AU - Yang, Yulong AU - Zhu, Guangjun AU - Cui, Yijun AU - Duan, Shiya TI - The $\circ $ operation and $*$ operation of Cohen-Macaulay bipartite graphs JO - Czechoslovak Mathematical Journal PY - 2024 SP - 735 EP - 757 VL - 74 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2024.0438-23/ DO - 10.21136/CMJ.2024.0438-23 LA - en ID - 10_21136_CMJ_2024_0438_23 ER -