J. Telega, A. Gałka, and B. Gambin, “Effective properties of physically nonlinear piezoelectric composites”, Arch. Mech., vol. 50, no. 2, pp. 321–340, Jan. 1998, Accessed: Nov. 19, 2025. [Online]. Available: https://am.ippt.pan.pl/index.php/am/article/view/v50p321