Voir la notice de l'article provenant de la source Hellenic Digital Mathematics Library
@article{MR_1979__14_a16, author = {John Papadakis}, title = {A {Boundary} value {Problem} for {Equations} of mixed type}, journal = {M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta} E\ensuremath{\pi}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\varepsilon}\ensuremath{\acute\omega}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta} }, pages = {157-171}, publisher = {mathdoc}, volume = {14}, year = {1979}, language = {gr}, url = {http://geodesic.mathdoc.fr/item/MR_1979__14_a16/} }
John Papadakis. A Boundary value Problem for Equations of mixed type. Μαθηματική Επιθεώρηση , Tome 14 (1979), p. 157-171. http://geodesic.mathdoc.fr/item/MR_1979__14_a16/