@article{MAN_1912__71_158548,
     author = {O. Bolza},
     title = {\"Uber die {Integrabilit\"atsbedingnngen} beim {Bestehen} von {Nebenbedingungen}},
     journal = {Mathematische Annalen},
     pages = {533--547},
     publisher = {mathdoc},
     volume = {71},
     year = {1912},
     zbl = {43.0473.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1912__71_158548/}
}