1. J. R. H. Otter, A. C. Cassell, and R. E. Hobbs, “Dynamic Relaxation,” Proc. Institution of Civil Engineers, 35 (1966) pp. 633–656.
2. P. Underwood, “An Adaptive Dynamic Relaxation Technique for Nonlinear Structural Analysis,” Lockheed Palo Alto Research Laboratory, Report No. LMSC-D678265, Palo Alto, California, USA, in preparation.
3. R. W. H. Wu and E. A. Witmer, “Finite-Element Analysis of Large Elastic-Plastic Transient Deformations of Simple Structures,” AIAA Journal, Vol. 9, No. 9, September 1971.
4. J. F. McNamara and P. V. Marcal, “Incremental Stiffness Method for Finite Element Analysis of the Nonlinear Dynamic Problem,” ONR Symposium on Numerical and Computer Methods in Structural Mechanics, Urbana, Illinois, September 1971.
5. M. Hartzman and J. R. Hutchinson, “Nonlinear Dynamics of Solids by the Finite Element Method,” J. of Computers and Structures, Vol. 2, pp. 47–77, 1972.