@article{IM2_1984_23_2_a8,
     author = {O. Ya. Viro},
     title = {Real plane curves of degrees~7 and~8: new prohibitions},
     journal = {Izvestiya. Mathematics },
     pages = {409--422},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {1984},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1984_23_2_a8/}
}