@article{DAN_1986_286_5_a12,
     author = {T. Fidler},
     title = {New congruences in the topology of singular real plane algebraic},
     journal = {Doklady Akademii Nauk},
     pages = {1075--1079},
     year = {1986},
     volume = {286},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_286_5_a12/}
}