TY - JOUR AU - V. G. Boltyanskii TI - Is the Sun a radiosphere? JO - Differencialʹnye uravneniâ PY - 1980 SP - 1936 EP - 1942 VL - 16 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1980_16_11_a2/ LA - ru ID - DE_1980_16_11_a2 ER -