@article{ZVMMF_1999_39_3_a11,
     author = {N. B. Konyukhova and V. H. Linh and I. B. Staroverova},
     title = {Modifications of the method of phase functions as applied to singular problems in quantum physics},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {492--522},
     publisher = {mathdoc},
     volume = {39},
     number = {3},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1999_39_3_a11/}
}