@article{DAN_1958_120_4_a14,
     author = {Ya. L. Alpert and F. F. Dobryakova and E. F. Chudesenko and B. S. Shapiro},
     title = {On the results of the electron concentration determinations in the external region of the ionosphere made on the basis 
},
     journal = {Doklady Akademii Nauk},
     pages = {743--746},
     publisher = {mathdoc},
     volume = {120},
     number = {4},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_120_4_a14/}
}