1. Solution of problems of elasticity by the framework method;Hrennikov;J. Applied Mechanics,1941
2. Variational methods for the solution of problems of equilibrium and vibrations;Courant;Bulletin of the American Mathematical Society,1943
3. The finite element method is plane stress analysis;Clough,1960
4. Toward the theory of elastic properties of policristalls;Lifshitz;Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki,1946