@article{DAN_1972_205_1_a16,
     author = {L. S. Tsybakova},
     title = {On oscillations in open resonators},
     journal = {Doklady Akademii Nauk},
     pages = {68--71},
     publisher = {mathdoc},
     volume = {205},
     number = {1},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_205_1_a16/}
}