%0 Journal Article
%A Ya. V. Kurylev
%T On the Holmgren--John uniqueness theorem for the wave equation with piecewise analytic coefficients
%J Zapiski Nauchnykh Seminarov POMI
%D 1992
%P 113-136
%V 203
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1992_203_a9/
%G ru
%F ZNSL_1992_203_a9