@article{JDM_1940__50_146249,
     author = {A. Lotze},
     title = {Die elementaren {Differentialoperationen} in der {Gra{\ss}mannschen} {Vektoranalysis.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {79--91},
     publisher = {mathdoc},
     volume = {50},
     year = {1940},
     zbl = {66.0814.04},
     url = {http://geodesic.mathdoc.fr/item/JDM_1940__50_146249/}
}