@article{MAN_1886__27_157222,
     author = {Morera},
     title = {Ueber die {Integration} der vollst\"andigen {Differentiale}},
     journal = {Mathematische Annalen},
     pages = {403--411},
     publisher = {mathdoc},
     volume = {27},
     year = {1886},
     zbl = {18.0304.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1886__27_157222/}
}