@article{CMH_1954__28_139071,
     author = {Heinz Bachmann},
     title = {Normalfunktionen und {Hauptfolgen.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {9--16},
     publisher = {mathdoc},
     volume = {28},
     year = {1954},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/CMH_1954__28_139071/}
}