J. Wang, R. Batra, and K. Isogimi, “Analysis of stress distribution in a thin rectangular plate by the method of caustics”, Arch. Mech., vol. 48, no. 6, pp. 1011–1024, Jan. 1996, Accessed: Feb. 07, 2026. [Online]. Available: https://am.ippt.pan.pl/index.php/am/article/view/v48p1011