@article{MZ_1958__70_169785,
     author = {Woldemar Barthel},
     title = {Zum {Busemannschen} und {Brunn-Minkowskischen} {Satz.}},
     journal = {Mathematische Zeitschrift},
     pages = {407--429},
     year = {1958},
     volume = {70},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1958__70_169785/}
}