@article{DAN_1964_157_5_a19,
     author = {N. G. Basov and A. Z. Grasyuk and I. G. Zubarev},
     title = {Regenerative optical quantum amplifier},
     journal = {Doklady Akademii Nauk},
     pages = {1084--1087},
     publisher = {mathdoc},
     volume = {157},
     number = {5},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_157_5_a19/}
}