@article{ARM_1971_7_4_a2,
     author = {Stach, Kv\v{e}tomil},
     title = {Eine {\"Aquivalenzrelation} in der {Kategorie} der {Phasenfunktionen}},
     journal = {Archivum mathematicum},
     pages = {159--166},
     year = {1971},
     volume = {7},
     number = {4},
     mrnumber = {0316793},
     zbl = {0253.34005},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/ARM_1971_7_4_a2/}
}