@article{10_14708_wm_v9i2_2229,
     author = {J. Mikusi\'nski},
     title = {O twierdzeniu {Zorna}},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 225--232},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {1967},
     doi = {10.14708/wm.v9i2.2229},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v9i2.2229/}
}