@article{JRAM_1892__110_148849,
     author = {Paul Appell},
     title = {Sur des transformations de mouvements.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {37--41},
     publisher = {mathdoc},
     volume = {110},
     year = {1892},
     zbl = {24.0857.02},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1892__110_148849/}
}