On Variational Principles in Elasticity＆BY ERIC REISSNER 1
Variational Principles in the Mathematical Theory of Plasticity＆BY D．C．DRUCKER 7
Discussion of D．C．Drucker＇s Paper＂variational Principles in the Mathematical Theory of Plasticity＂＆BY P．G．HODGE,JR． 23
A Geemetrical Theory of Diffraction＆BY JCSEPH B．KELLER 27
Upper and Lower Bounds for Eigenvalues＆BY J．B．DIAZ 53
Stationary Principles for Forced Vibrations in Elasticity and Electromagnetism＆BY J．L．SYNGE 79
A Variational Computation Method for Forced-vibration Problems＆BY H．F．WEINBERGER 89
Applications of Variational Methods in the Theory of Conformal Mapping＆BY M．M．SCHIFFER 93
Dynamic Programming and Its Application to Variational Problems in Mathematical Economics＆BY RICHARD BELLMAN 115
Variational Methods in Hydrodynamics＆BY S．CHANDRASEKHAR 139
Some Applications of Functional Analysis to the Calculus of Variations＆BY E．H．ROTHE 143
INDEX 153