1. Leissa, A. W., 1969, “Vibration of Plates,” NASA-160, U.S. Government Printing Office, Washington, D.C.
2. Blevins, R. D., 1979, Formulas for Natural Frequency and Mode Shape, Van Nostrand Reinhold, New York.
3. Gorman, D. J., 1982, Free Vibration Analysis of Rectangular Plates, Elsevier, New York.
4. Sekiya, S., Hamada, M., and Sumi, S., 1982, Handbook for Strength and Design for Plate Structures, Asakura Publishing Co., Tokyo (in Japanese).
5. Liu, C. L., 1968, Introduction of Combinatorial Mathematics, McGraw-Hill, New York, pp. 126–166.