@article{FAA_2012_46_1_a11,
     author = {V. D. Sedykh},
     title = {On {Euler} {Characteristics} of {Manifolds} of {Singularities} of {Wave} {Fronts}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {92--96},
     publisher = {mathdoc},
     volume = {46},
     number = {1},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2012_46_1_a11/}
}