Shkurupiy, Oleksandr, Pavlo Mytrofanov, Yuriy Davydenko, and Muhlis Hajiyev. “COMPRESSED ELEMENTS WITH A VARIABLE IN LENGTH STIFFNESS EQUILIBRIUM FORM STABILITY DETERMINATION”. Academic journal Industrial Machine Building Civil Engineering 2, no. 53 (October 31, 2019): 30–36. Accessed April 6, 2025. https://journals.nupp.edu.ua/znp/article/view/1886.