@article{FAA_1982_16_2_a8,
     author = {V. A. Vassiliev},
     title = {Self-intersections of wave fronts and {Legendre} {(Lagrangian)} characteristic numbers},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {68--69},
     year = {1982},
     volume = {16},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1982_16_2_a8/}
}