@article{ELMA_1950__5_140549,
     author = {M. Landolt},
     title = {Die {Tensorkoordinaten} des {Drehwinkels.}},
     journal = {Elemente der Mathematik},
     pages = {104--113},
     publisher = {mathdoc},
     volume = {5},
     year = {1950},
     zbl = {0038.32303},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1950__5_140549/}
}