@article{CMH_1946__19_138895,
     author = {W. Scherrer},
     title = {\"Uber das {Hauptnormalenbild} einer {Raumkurve.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {115--133},
     year = {1946},
     volume = {19},
     zbl = {0060.35101},
     url = {http://geodesic.mathdoc.fr/item/CMH_1946__19_138895/}
}