@article{AA_1992_4_3_a5,
     author = {O. Ya. Viro and V. I. Zvonilov},
     title = {An inequality for the number of nonempty ovals of a~curve of odd degree},
     journal = {Algebra i analiz},
     pages = {159--170},
     publisher = {mathdoc},
     volume = {4},
     number = {3},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1992_4_3_a5/}
}