@article{01006750, title = {High frequency asymptotic solutions of the reduced wave equation on infinite regions with nonconvex boundaries.}, journal = {Mathematical Problems in Engineering}, volume = {2}, year = {1996}, pages = {333-365}, doi = {10.1155/S1024123X96000385}, zbl = {0869.35034}, language = {en}, url = {http://dml.mathdoc.fr/item/01006750} }
Bloom, Clifford O. High frequency asymptotic solutions of the reduced wave equation on infinite regions with nonconvex boundaries.. Mathematical Problems in Engineering, Tome 2 (1996) pp. 333-365. doi : 10.1155/S1024123X96000385. http://gdmltest.u-ga.fr/item/01006750/