@article{PMF_1923-1924_33_1_a6,
     author = {Vetter, Q.},
     title = {Deux remarques sur les coniques imaginaires g\'en\'erales},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {91--98},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {1923-1924},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/PMF_1923-1924_33_1_a6/}
}