Cichorski, Waldemar, and Adam Stolarski. “Sensitivity of the Numerical Solution to Finite Element Mesh for Reinforced Concrete Deep Beams”. Computer Assisted Methods in Engineering and Science, vol. 7, no. 2, Apr. 2023, pp. 195-06, https://cames3.ippt.pan.pl/index.php/cames/article/view/1250.