A class of elliptic differential equations with discontinuous coefficients Charles B., Jr. Morrey Séminaire Brelot-Choquet-Deny. Théorie du potentiel
Multiple integral problems in the calculus of variations and related topics Charles B. Jr Morrey — 1960 Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
Second Order Elliptic Equations in Several Variables and Hölder Continuity. Charles B. Morrey jr. Mathematische Zeitschrift