1. Bowles J.E. (1974). Analytical and computer methods in foundation engineering .McGraw‐Hill Inc. New York N.Y.
2. Bowles J. E. (1977). Foundation analysis and design . 2 Ed. McGraw‐Hill Inc. New York N.Y.
3. James M. L. Smith G. M. Wolford J. C. and Whaley P. W. (1989). Vibration of mechanical and structural systems . Harper & Row Publishers Inc. New York N.Y.
4. Lai Y. C. (1990). “Dynamic response of beams on elastic foundation ” thesis presented to the University of Missouri at Kansas City at Independence Mo. In partial fulfillment of the requirements for the degree of Master of Science.
5. Finite Beams on Elastic Foundation