SHKURUPIY, A. A.; MYTROFANOV, P. B. INFLUENCE OF LONGITUDINAL FORCES FOR DETERMININGTHE FREQUENCY OF FREE OSCILLATIONS DISCRETE DYNAMIC SYSTEMS. Academic journal Industrial Machine Building Civil Engineering, [S. l.], v. 1, n. 48, p. 47–53, 2017. DOI: 10.26906/znp.2017.48.780. Disponível em: https://journals.nupp.edu.ua/znp/article/view/780. Acesso em: 8 apr. 2025.