TY  - JOUR
AU  - G. S. Ivanov-Kholodnyi
TI  - Estimate of the negative ion concentration in the $D$~region of the ionosphere
JO  - Doklady Akademii Nauk
PY  - 1967
SP  - 1328
EP  - 1329
VL  - 177
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1967_177_6_a20/
LA  - ru
ID  - DAN_1967_177_6_a20
ER  -