@article{JRAM_1877__82_148302,
     author = {G. Erdmann},
     title = {Ueber unstetige {L\"osungen} in der {Variationsrechnung.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {21--30},
     publisher = {mathdoc},
     volume = {82},
     year = {1877},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1877__82_148302/}
}