%0 Journal Article
%A S. D. Kogan
%T Experimental hodograph of $P$ wave and the horizontal inhomogeneity of the mantle
%J Doklady Akademii Nauk
%D 1976
%P 1318-1321
%V 230
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1976_230_6_a15/
%G ru
%F DAN_1976_230_6_a15