@article{RM_1976_31_3_a15,
     author = {A. D. Krakhnov},
     title = {Asymptotic behavior of the eigenvalues of pseudodifferential operators, and invariant tori},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {31},
     number = {3},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1976_31_3_a15/}
}