PÎRȘAN, Dan; PRAISACH, Zeno-Iosif. Natural frequencies and mode shapes in zero-force members of a truss. Studia Universitatis Babeș-Bolyai Engineering, [S. l.], v. 66, n. 1, p. 94–99, 2021. DOI: 10.24193/subbeng.2021.1.9. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbengineering/article/view/45. Acesso em: 5 feb. 2025.