por Protter, Murray H [autor] | Morrey, Charles Bradfield, 1907- [autor].
por Symposium On Partial Differential Equations (1955 : University Of California) | Douglis, A [editor] | Aronszajn, Nachman, 1907- [editor] | Morrey, Charles Bradfield, 1907- [editor] | Estados Unidos. Office of Naval Research.