@article{JRAM_1908__133_149273,
     author = {J.N. Hazzidakis},
     title = {\"Uber die {Kr\"afte,} die {Kegelschnitte} als {Bahnen} hervorrufen.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {68--76},
     publisher = {mathdoc},
     volume = {133},
     year = {1908},
     zbl = {38.0724.01},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1908__133_149273/}
}