@article{JRAM_1857__54_147717,
     author = {E. Heine},
     title = {Lagrange's {Umkehrungsformel.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {388--388},
     publisher = {mathdoc},
     volume = {54},
     year = {1857},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1857__54_147717/}
}