@article{ARM_1965__1_1_a4,
     author = {Sekanina, Milan},
     title = {A remark to the paper of {M.} {Froda-Schechter:} {Pr\'eordres} et \'equivalences dans l'ensemble des familles d'un ensemble},
     journal = {Archivum mathematicum},
     pages = {57--58},
     publisher = {mathdoc},
     volume = {01},
     number = {1},
     year = {1965},
     mrnumber = {0202610},
     zbl = {0199.02201},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1965__1_1_a4/}
}