%0 Journal Article
%A Leon S. Farhy
%T Trapping obstacles with nonhyperbolic periodic ray, asymptotic behaviour of solutions.
%J Mathematische Zeitschrift
%D 1994
%P 143-166
%V 217
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1994__217_1_174685/
%F MZ_1994__217_1_174685