1. The concept of FGM ceramic transactions;Koizumi;Funct Grad Mater,1993
2. Three-dimensional exact solution for the vibration of functionally graded rectangular plate;Vel;J Sound Vib,2004
3. Die Lehre von der Elasticitaet und Festigkeit;Winkler,1867
4. Pasternak PL. On a new method of analysis of an elastic foundation by means of two foundation constants. Cosudarstrennoe Izdatelstvo Literaturi po Stroitelstvu i Arkhitekture. Moscow: USSR; 1954. p. 1–56 [in Russian].
5. The free vibration of rectangular plates;Leissa;J Sound Vib,1973