@article{JRAM_1853__45_147514,
     author = {Adolph G\"opel},
     title = {De aequationibus secundi gradus indeterminatis. {(Dissertatio} inauguralis).},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {1--14},
     publisher = {mathdoc},
     volume = {45},
     year = {1853},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1853__45_147514/}
}