DovzhenkoО. Variational metod applied in calculation of key joint’s strength in the current construction systems / DovzhenkoО., V. Pogribnyi, Yu. Chursa // ACADEMIC JOURNAL Industrial Machine Building, Civil Engineering. – Полтава: ПНТУ, 2017. – Т. 2 (47). – С. 133-139. – Режим доступу: https://journals.nupp.edu.ua/znp/article/view/77 (дата звернення: 24.04.2024).