Lyakhovich, Leonid S., Pavel A. Akimov, and Boris A. Tukhfatullin. 2018. “CRITERION OF MINIMUMMATERIAL CONSUMPTIONOF FLANGE OF I-SHAPED BAR WITH A VARIATION IN ITS THICKNESS ANDOUTLINE OF THE WIDTH, WITH RESTRICTION TO THE VALUE OF THE CRITICALFORCE OR RESTRICTIONTO THE VALUE OF THEFIRSTNATURAL FREQUENCY INTWO PRINCIPAL PLANESO”. International Journal for Computational Civil and Structural Engineering 14 (2):96-108. https://doi.org/10.22337/2587-9618-2018-14-2-96-108.