@article{DAN_1973_211_4_a16,
     author = {A. A. Kaminskii},
     title = {On the search for active media for lasers},
     journal = {Doklady Akademii Nauk},
     pages = {811--813},
     publisher = {mathdoc},
     volume = {211},
     number = {4},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_211_4_a16/}
}