@article {547, title = {A semilinear nonclassical pseudodifferential boundary value problem in the Sobolev spaces}, journal = {C. R. Acad.Sci. Paris, Ser I}, volume = {337}, year = {2003}, month = {08/2003}, pages = {451-456}, chapter = {451}, author = {Egorov, Yu. V. and N. M. Chuong and D. A. Tuan} }