Z. Cheng and R. Batra, “Deflection relationships between the homogeneous Kirchhoff plate theory and different functionally graded plate theories”, Arch. Mech., vol. 52, no. 1, pp. 143–158, Jan. 2000, Accessed: Nov. 19, 2025. [Online]. Available: https://am.ippt.pan.pl/index.php/am/article/view/v52p143