@article{AKGWG_1868__13_135758,
     author = {M. A. Stern},
     title = {\"uber die {Bestimmung} der {Constante} in der {Variationsrechnung}},
     journal = {Abhandlungen der K\"oniglichen Gesellschaft der Wissenschaften in G\"ottingen},
     pages = {53--86},
     publisher = {mathdoc},
     volume = {13},
     year = {1868},
     url = {http://geodesic.mathdoc.fr/item/AKGWG_1868__13_135758/}
}