@article{10_21136_CMJ_1967_100774,
     author = {Plemmons, Robert J.},
     title = {Maximal ideals in the direct product of two semigroups},
     journal = {Czechoslovak Mathematical Journal},
     pages = {257--260},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {1967},
     doi = {10.21136/CMJ.1967.100774},
     mrnumber = {0214681},
     zbl = {0189.02001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1967.100774/}
}