@article{JRAM_1923__152_149515,
     author = {Rudolf Sturm},
     title = {Zwei {Minimalprobleme.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {99--108},
     publisher = {mathdoc},
     volume = {152},
     year = {1923},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1923__152_149515/}
}