@article{10_4064_cm_43_1_99_109,
     author = {Peter M. Gruber},
     title = {Isometrien des {Konvexringes}},
     journal = {Colloquium Mathematicum},
     pages = {99--109},
     publisher = {mathdoc},
     volume = {43},
     number = {1},
     year = {1980},
     doi = {10.4064/cm-43-1-99-109},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-43-1-99-109/}
}