@article{JRAM_1899__120_149065,
     author = {Fritz K\"otter},
     title = {Der {Bodendruck} von {Sand} in verticalen cylindrischen {Gef\"assen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {189--241},
     publisher = {mathdoc},
     volume = {120},
     year = {1899},
     zbl = {30.0628.05},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1899__120_149065/}
}