Szolc, T. “Continuous One-Dimensional Elastic Macro-Elements As a Natural Alternative Crack Detection Tool to the Spectral Finite Element Method”. Archives of Mechanics 59, no. 6 (November 1, 2007): 473–499. Accessed November 19, 2025. https://am.ippt.pan.pl/index.php/am/article/view/v59p473.