@article{RM_1987_42_6_a3,
     author = {V. S. Buslaev},
     title = {Semiclassical approximation for equations with periodic coefficients},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {97--125},
     publisher = {mathdoc},
     volume = {42},
     number = {6},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1987_42_6_a3/}
}