@article{JRAM_1882__93_148512,
     author = {Wilhelm Stahl},
     title = {Zur synthetischen {Construction} der {Complexe} zweiten {Grades.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {215--236},
     publisher = {mathdoc},
     volume = {93},
     year = {1882},
     zbl = {14.0563.01},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1882__93_148512/}
}