Lectures given at a Summer School of the Centro Internazionale Matematico Estivo (C.I.M.E.) held in Pisa, Italy, September 1-10, 1958
series:C.I.M.E. Summer Schools
L. Nirenberg: On ellliptic partial differential equations.- S. Agmon: The Lp approach to the Dirichlet problems.- C.B. Morrey, Jr.: Multiple integral problems in the calculus of variations and related topics.- L. Bers: Uniformizzazione e moduli.