@article{JRAM_1888__102_148711,
     author = {K. Hensel},
     title = {Theorie der unendlich d\"unnen {Strahlenb\"undel.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {273--303},
     publisher = {mathdoc},
     volume = {102},
     year = {1888},
     zbl = {20.0845.01},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1888__102_148711/}
}