Zeleniakienė, Daiva, and Antanas Žiliukas. “Stress Concentration Factor of Foamed Materials Used for Cores of Sandwich Composites”. Aviation 10, no. 4 (December 31, 2006): 3-7. Accessed November 23, 2024. https://tede.vgtu.lt/index.php/Aviation/article/view/7394.