@article{AA_1993_5_4_a5,
     author = {O. M. Myasnichenko},
     title = {Singularities of wave fronts on the interface of two media},
     journal = {Algebra i analiz},
     pages = {149--169},
     publisher = {mathdoc},
     volume = {5},
     number = {4},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1993_5_4_a5/}
}