%0 Journal Article
%A M. M. Popov
%T Wave field in the caustic region in a vicinity of a boundary flex point
%J Zapiski Nauchnykh Seminarov POMI
%D 1979
%P 246-260
%V 89
%U http://geodesic.mathdoc.fr/item/ZNSL_1979_89_a17/
%G ru
%F ZNSL_1979_89_a17