@article{ARM_1973_9_3_a5,
     author = {Nov\'ak, V{\'\i}t\v{e}zslav},
     title = {\"Uber {Erweiterungen} geordneter {Mengen}},
     journal = {Archivum mathematicum},
     pages = {141--146},
     year = {1973},
     volume = {9},
     number = {3},
     mrnumber = {0354456},
     zbl = {0282.06002},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/ARM_1973_9_3_a5/}
}