@article{JDM_1923__32_145653,
     author = {J.A. Schouten},
     title = {Der {Ricci-Kalk\"ul.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {91--97},
     publisher = {mathdoc},
     volume = {32},
     year = {1923},
     url = {http://geodesic.mathdoc.fr/item/JDM_1923__32_145653/}
}