@article{TMF_1984_60_2_a7,
     author = {N. N. Bogolyubov (Jr.) and Fam Le Kien and A. S. Shumovskii},
     title = {Intensity of superradiant generation in two-level systems},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {254--261},
     publisher = {mathdoc},
     volume = {60},
     number = {2},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1984_60_2_a7/}
}