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@article{JRAM_1966__222_150727, author = {A.K. Aziz and R.P. Gilbert}, title = {A generalized {Goursat} problem for elliptic equations.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {1--13}, publisher = {mathdoc}, volume = {222}, year = {1966}, zbl = {0132.07503}, url = {http://geodesic.mathdoc.fr/item/JRAM_1966__222_150727/} }
A.K. Aziz; R.P. Gilbert. A generalized Goursat problem for elliptic equations.. Journal für die reine und angewandte Mathematik, Tome 222 (1966), pp. 1-13. http://geodesic.mathdoc.fr/item/JRAM_1966__222_150727/