@article{JDM_1918__27_145535,
     author = {A. Hurwitz},
     title = {Zu {Gra{\ss}manns} {Note:} },
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {55--57},
     publisher = {mathdoc},
     volume = {27},
     year = {1918},
     url = {http://geodesic.mathdoc.fr/item/JDM_1918__27_145535/}
}