@article{DAN_1968_180_1_a15,
     author = {A. A. Kaminskii},
     title = {Optical quantum generator with a combined active medium},
     journal = {Doklady Akademii Nauk},
     pages = {59--62},
     year = {1968},
     volume = {180},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_180_1_a15/}
}