M. Krawczuk, W. Ostachowicz, and A. Żak, “Natural vibration frequencies of delaminated composite beams”, CAMES, vol. 3, no. 3, pp. 233–243, Jul. 2023, Accessed: Jan. 12, 2025. [Online]. Available: https://cames3.ippt.pan.pl/index.php/cames/article/view/1444