@article{05692260, title = {Regularity of the solution of the first initial-boundary value problem for hyperbolic equations in domains with cuspidal points on boundary.}, journal = {Boundary Value Problems [electronic only]}, volume = {2009}, year = {2009}, doi = {10.1155/2009/135730}, zbl = {1186.35014}, language = {en}, url = {http://dml.mathdoc.fr/item/05692260} }
Nguyen Manh Hung; Vu Trong Luong. Regularity of the solution of the first initial-boundary value problem for hyperbolic equations in domains with cuspidal points on boundary.. Boundary Value Problems [electronic only], Tome 2009 (2009) . doi : 10.1155/2009/135730. http://gdmltest.u-ga.fr/item/05692260/