@article{DAN_1969_186_3_a21,
     author = {V. A. Troitskaya and Ya. I. Fel'dshtein and R. V. Shchepetnov},
     title = {Pulsations of $Pi2$, the oval of aurorae and the density of plasma in the magnetosphere},
     journal = {Doklady Akademii Nauk},
     pages = {575--577},
     publisher = {mathdoc},
     volume = {186},
     number = {3},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_186_3_a21/}
}