@article{IM2_1991_37_2_a7,
     author = {E. I. Shustin},
     title = {New restrictions on the topology of real curves of degree a multiple of~8},
     journal = {Izvestiya. Mathematics },
     pages = {421--443},
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1991_37_2_a7/}
}