%0 Journal Article %A L. P. Vinnik %A V. Z. Ryaboy %A L. N. Starobinets %A A. V. Egorkin %A N. M. Chernyshev %T $P$-Wave speeds in the upper mantle of the East-European platform %J Doklady Akademii Nauk %D 1978 %P 70-73 %V 242 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1978_242_1_a16/ %G ru %F DAN_1978_242_1_a16