@article{10_21136_CMJ_1988_102262,
     author = {Zelinka, Bohdan},
     title = {A remark on signed posets and signed graphs},
     journal = {Czechoslovak Mathematical Journal},
     pages = {673--676},
     publisher = {mathdoc},
     volume = {38},
     number = {4},
     year = {1988},
     doi = {10.21136/CMJ.1988.102262},
     mrnumber = {962910},
     zbl = {0679.05067},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1988.102262/}
}