Dynamical analysis of a 2-degrees of freedom spatial pendulumStelian Alaci, Florina-Carmen Ciornei, Sorinel-Toderas Siretean, Mariana-Catalina Ciornei and Gabriel Andrei ŢibuMATEC Web Conf., 184 (2018) 01003DOI: https://doi.org/10.1051/matecconf/201818401003