@article{JRAM_1936__174_149951,
     author = {Fritz Lettenmeyer},
     title = {\"Uber die sogenannte {Hospitalsche} {Regel.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {246--247},
     publisher = {mathdoc},
     volume = {174},
     year = {1936},
     zbl = {0013.20302},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1936__174_149951/}
}