@article{10_21136_CMJ_1993_128415,
     author = {Jakub{\'\i}k, J\'an},
     title = {On filters of ordered semigroups},
     journal = {Czechoslovak Mathematical Journal},
     pages = {519--522},
     publisher = {mathdoc},
     volume = {43},
     number = {3},
     year = {1993},
     doi = {10.21136/CMJ.1993.128415},
     mrnumber = {1249619},
     zbl = {0797.06012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1993.128415/}
}