Lyakhovich, L., Akimov, P., & Tukhfatullin, B. (2020). ASSESSMENT OF THE PROXIMITY OF DESIGN TO MINIMUM MATERIAL CAPACITY SOLUTION OF PROBLEM OF OPTIMIZATION OF THE FLANGE WIDTH OF I-SHAPED CROSS-SECTION RODS WITH ALLOWANCE FOR STABILITY CONSTRAINTS OR CONSTRAINTS FOR THE VALUE OF THE FIRST NATIONAL FREQUENCY AND STRENGTH REQUIREMENTS. International Journal for Computational Civil and Structural Engineering, 16(2), 71–82. https://doi.org/10.22337/2587-9618-2020-16-2-71-82