@article{TM_1988_179_a11,
     author = {D. R. Yafaev},
     title = {Eikonal approximation for the {Schr\"odinger} equation},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {226--240},
     publisher = {mathdoc},
     volume = {179},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1988_179_a11/}
}