Kruszka, L., W.K. Nowacki, and M. Wolna. “Strength and Fracture Analysis of Brittle Photoelastic Material. Static And Dynamic Tests”. Engineering Transactions 40, no. 3 (October 1, 1992): 343–362. Accessed June 11, 2025. https://et3.ippt.pan.pl/index.php/et/article/view/1600.