Астанін, В.В., М.М. Бородачов, and С.Ю. Богдан. “Development of a Numerical Method for Determination of Stress Intensity Factor into the Members With Cracks”. Proceedings of National Aviation University 42, no. 1 (January 1, 2010): 40–44. Accessed May 7, 2024. https://jrnl.nau.edu.ua/index.php/visnik/article/view/1809.