1. Development of the Stiffness Method to Define Bounds on Elastic Behaviour of Structures;Melosh,1962
2. On Optimum Idealizations in Discrete Element Analysis;Carroll,1971
3. Optimization of Finite Element Grids Based on Minimum Potential Energy;Mcneice,1971
4. A Convergence Investigation of the Direct Stiffness Method;Key,1966
5. Function minimization by conjugate gradients;Fletcher;Computer J,1964