@article{ELMA_1962__17_140746,
     author = {Johannes M. Ebersold},
     title = {Kleine {Einf\"uhrung} in die {Topologie.}},
     journal = {Elemente der Mathematik},
     pages = {49--54},
     year = {1962},
     volume = {17},
     zbl = {0099.39305},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1962__17_140746/}
}