@article{10_21136_CMJ_2024_0438_23, author = {Yang, Yulong and Zhu, Guangjun and Cui, Yijun and Duan, Shiya}, title = {The $\circ $ operation and $*$ operation of {Cohen-Macaulay} bipartite graphs}, journal = {Czechoslovak Mathematical Journal}, pages = {735--757}, year = {2024}, volume = {74}, number = {3}, doi = {10.21136/CMJ.2024.0438-23}, mrnumber = {4804957}, zbl = {07953675}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2024.0438-23/} }