T. Szolc, “Continuous one-dimensional elastic macro-elements as a natural alternative crack detection tool to the spectral finite element method”, Arch. Mech., vol. 59, no. 6, pp. 473–499, Nov. 2007, Accessed: Nov. 19, 2025. [Online]. Available: https://am.ippt.pan.pl/index.php/am/article/view/v59p473