1. Varialional Methods in Elasticity and Plasticity;Washizu,1975
2. Variational Principles of the Elasticity Theory and Shell Theory;Abovski,1978
3. Variational Formulation of Problems for Elastic Systems;Rozin,1978
4. Varialional problems in the nonlinear theory of elastic shells;Aynola;Prikl. Mat. Mekh.,1957
5. Complementary variational principles in elasticity and plasticity;Washizu,1979