%0 Journal Article
%A Popivanov, Nedyu
%A Nikolov, Aleksey
%T Singular Solutions of Protter’s Problem for a Class of 3-D Hyperbolic Equations
%J Mathematics and Education in Mathematics
%D 2012
%P 191-196
%V 41
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MEM_2012_41_1_a18/
%G en
%F MEM_2012_41_1_a18