Y.-G. Sun and Z.-G. Zhou, “Nonlocal theoretical analysis of the dynamic behavior of two Griffith cracks in a piezoelectric strip”, Arch. Mech., vol. 56, no. 4, pp. 271–291, Jul. 2004, Accessed: Jan. 23, 2026. [Online]. Available: https://am.ippt.pan.pl/index.php/am/article/view/v56p271