TY - JOUR AU - I. O. Kitov AU - M. B. Gokhberg TI - Near surface source acoustic energy determination on the base of vertical sounding of the ionosphere JO - Doklady Akademii Nauk PY - 1992 SP - 982 EP - 985 VL - 324 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1992_324_5_a13/ LA - ru ID - DAN_1992_324_5_a13 ER -