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@article{MM2_1974__13_154263, author = {Wolf von Wahl}, title = {Regular {Solutions} of {Initial-Boundary} {Value} {Problems} for {Linear} and {Nonlinear} {Wave} - {Equations} {I.}}, journal = {Manuscripta mathematica}, pages = {187--206}, publisher = {mathdoc}, volume = {13}, year = {1974}, zbl = {0289.35053}, url = {http://geodesic.mathdoc.fr/item/MM2_1974__13_154263/} }
Wolf von Wahl. Regular Solutions of Initial-Boundary Value Problems for Linear and Nonlinear Wave - Equations I.. Manuscripta mathematica, Tome 13 (1974), pp. 187-206. http://geodesic.mathdoc.fr/item/MM2_1974__13_154263/