@article{KYB_1984__20_3_a4,
     author = {Wygralak, Maciej},
     title = {A supplement to {Gottwald's} note on fuzzy cardinals},
     journal = {Kybernetika},
     pages = {240--243},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {1984},
     mrnumber = {763649},
     zbl = {0549.03049},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1984__20_3_a4/}
}