@article{10_4064_cm_33_1_103_104,
     author = {Hans Herda},
     title = {A characterization of spheres among convex 3-bodies},
     journal = {Colloquium Mathematicum},
     pages = {103--104},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {1975},
     doi = {10.4064/cm-33-1-103-104},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-33-1-103-104/}
}