@article{DAN_1978_242_3_a19,
     author = {V. K. Apal'kov and V. P. Mitrofanov and V. S. Shiyan},
     title = {Investigation of the frequency stability of autogenerator with sapphire resonator},
     journal = {Doklady Akademii Nauk},
     pages = {578--580},
     publisher = {mathdoc},
     volume = {242},
     number = {3},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_242_3_a19/}
}