@article{DAN_1989_306_3_a13,
     author = {V. E. Kunitsyn and N. G. Preobrazhenskii and E. D. Tereshchenko},
     title = {Reconstruction of ionospheric heterogeneities using the radio sounding},
     journal = {Doklady Akademii Nauk},
     pages = {575--579},
     publisher = {mathdoc},
     volume = {306},
     number = {3},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_306_3_a13/}
}