Payne, Lawrence Edward, Improperly posed problems in partial differential equations / L. E. Payne - 1a ed. - Philadelphia : Siam, 1975. - 76 p. : 25 cm. - Regional conference sers. in applied mathematics ; V.22 . Incluye bibliografía Subjects--Topical Terms: Ecuaciones diferenciales parciales LC Class. No.: QA377 / P39 1975