1. Engineering Analysis;Crandall,1956
2. The method of weighted residuals—A review;Finlayson;Applied Mechanics Reviews,1966
3. On the rational choice of co-ordinate functions for the method of Ritz (in Russian);Mikhlin;Zhurnal Vychisliteln'oi Matematiki i Matematicheskoi Fiziki,1962
4. The Numerical Performance of Variational Methods;Mikhlin,1971
5. An asymptotic method for the study of the problem of eigenvalues for rectangular regions;Bolotin,1961