@article{JRAM_1983__344_152569,
     author = {Erhard Heinz},
     title = {Zum {Marx-Shiffmanschen} {Variationsproblem.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {196--200},
     publisher = {mathdoc},
     volume = {344},
     year = {1983},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1983__344_152569/}
}