@article{TMF_1985_62_3_a11,
     author = {N. N. Bogolyubov (Jr.) and Fam Le Kien and A. S. Shumovskii},
     title = {Dynamics of many-photon processes in two-level systems},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {461--471},
     year = {1985},
     volume = {62},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1985_62_3_a11/}
}