@article{JDM_1952__55_146358,
     author = {Oskar Perron},
     title = {Constantin {Carath\'eodry.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {39--51},
     publisher = {mathdoc},
     volume = {55},
     year = {1952},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JDM_1952__55_146358/}
}