@article{ELMA_1981__36_141266,
     author = {Christian Blatter},
     title = {\"Uber {Kurven} konstanter {Breite.}},
     journal = {Elemente der Mathematik},
     pages = {105--115},
     publisher = {mathdoc},
     volume = {36},
     year = {1981},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1981__36_141266/}
}