@article{TMF_1980_45_1_a6,
     author = {A. O. Melikyan and K. Kh. Simonyan},
     title = {The limit $T\to\infty$ {in~Hill's} method for quasienergy states},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {76--79},
     publisher = {mathdoc},
     volume = {45},
     number = {1},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1980_45_1_a6/}
}