Manuylov, Gaik, et al. “ON THE CALCULATIONS FOR THE STABILITY OF BEAMS, FRAMES, AND CYLINDRICAL SHELLS IN THE ELASTO-PLASTIC STAGE”. International Journal for Computational Civil and Structural Engineering, vol. 18, no. 3, Sept. 2022, pp. 25-36, https://doi.org/10.22337/2587-9618-2022-18-3-25-36.