@article{DAN_1961_136_5_a15, author = {V. G. Istomin}, title = {Magnesium and calcium ions in the upper atmosphere of the {Earth}}, journal = {Doklady Akademii Nauk}, pages = {1066--1068}, publisher = {mathdoc}, volume = {136}, number = {5}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_136_5_a15/} }