@article{JRAM_1923__152_251664,
     author = {Otto Haupt},
     title = {\"Uber {Asymptoten} ebener {Kurven.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {239--239},
     publisher = {mathdoc},
     volume = {152},
     year = {1923},
     zbl = {49.0496.04},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1923__152_251664/}
}