@article{MAN_1962__145_160909,
     author = {M. HERRMANN},
     title = {Eine {Verallgemeinerung} des {Apollonischen} {Problems.}},
     journal = {Mathematische Annalen},
     pages = {256--264},
     publisher = {mathdoc},
     volume = {145},
     year = {1962},
     zbl = {0112.13502},
     url = {http://geodesic.mathdoc.fr/item/MAN_1962__145_160909/}
}