@article{10_21136_CMJ_1991_102463,
     author = {Niederle, Josef},
     title = {Natural generalization of some lattice theory concepts to partially ordered sets},
     journal = {Czechoslovak Mathematical Journal},
     pages = {297--299},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {1991},
     doi = {10.21136/CMJ.1991.102463},
     mrnumber = {1105446},
     zbl = {0735.06001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1991.102463/}
}