@article{MASLO_1966_16_4_a4,
     author = {Vala, Josef},
     title = {Doppelverh\"altnisscharen mit zusammenfallenden oder imagin\"aren {Grundkurven} auf {Regelfl\"achen}},
     journal = {Mathematica slovaca},
     pages = {337--348},
     year = {1966},
     volume = {16},
     number = {4},
     mrnumber = {0216399},
     zbl = {0166.17302},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1966_16_4_a4/}
}