@article{MZ_1936__41_168700,
     author = {W. Blaschke},
     title = {Integralgeometrie 20. {Zur} elliptischen {Geometrie}},
     journal = {Mathematische Zeitschrift},
     pages = {785--786},
     publisher = {mathdoc},
     volume = {41},
     year = {1936},
     zbl = {0015.12201},
     url = {http://geodesic.mathdoc.fr/item/MZ_1936__41_168700/}
}