@article{MASLO_1965_15_4_a3,
     author = {Mi\v{s}{\'\i}k, Ladislav},
     title = {\"Uber einen {Satz} von {E.} {Hopf}},
     journal = {Mathematica slovaca},
     pages = {285--295},
     year = {1965},
     volume = {15},
     number = {4},
     mrnumber = {0210865},
     zbl = {0192.14302},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1965_15_4_a3/}
}