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@article{MM2_1982__39_154890, author = {Michael Langenbruch}, title = {Differentiability and growth of solutions of partial differential equations.}, journal = {Manuscripta mathematica}, pages = {297--312}, publisher = {mathdoc}, volume = {39}, year = {1982}, zbl = {0534.35023}, url = {http://geodesic.mathdoc.fr/item/MM2_1982__39_154890/} }
Michael Langenbruch. Differentiability and growth of solutions of partial differential equations.. Manuscripta mathematica, Tome 39 (1982), pp. 297-312. http://geodesic.mathdoc.fr/item/MM2_1982__39_154890/