Dietrich, L., J. Miastkowski, and R. Szczebiot. “Strenght Analysis of Axially Symmetric Elements With a Series of Rectangular Notches”. Engineering Transactions 40, no. 4 (December 31, 1992): 435–456. Accessed June 11, 2025. https://et3.ippt.pan.pl/index.php/et/article/view/1605.