%0 Journal Article
%A D. K. Ozerov
%T The estimation of the velocity gradient of elastic waves by the interfered refracted wave
%J Zapiski Nauchnykh Seminarov POMI
%D 1980
%P 123-126
%V 99
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1980_99_a10/
%G ru
%F ZNSL_1980_99_a10