@article{MZ_1937__42_168722,
     author = {M., Pinl},
     title = {Zur integrallosen {Darstellung} n-dimensionaler isotroper {Mannigfaltigkeiten} im euklidischen {Rn+2}},
     journal = {Mathematische Zeitschrift},
     pages = {337--354},
     publisher = {mathdoc},
     volume = {42},
     year = {1937},
     zbl = {0015.41504},
     url = {http://geodesic.mathdoc.fr/item/MZ_1937__42_168722/}
}