SU, Zhenchao; XUE, Yanxia. Two Theorems for Computation of Projections of Virtual Displacements and Its Application in Structural Analysis. Periodica Polytechnica Mechanical Engineering, [S. l.], v. 61, n. 2, p. 135–139, 2017. 10.3311/PPme.9922. Disponível em: https://pp.bme.hu/me/article/view/9922. Acesso em: 26 apr. 2024.