1. Bisplinghoff, R. L., Ashley, H., and Halfman, R. L., Aeroelasticity, Addison Wesley Longman,Reading, MA, 1955, pp.641-650; alsoDover, New York, 1996.
2. Hurty, W. C., and Rubinstein, M. F., Dynamics of Structures, Prentice-Hall, Englewood Cliffs, NJ, 1964, pp.299-307.
3. Reduction of stiffness and mass matrices
4. Automatic choice of global shape functions in structural analysis
5. Coupling of substructures for dynamic analyses.