Salim, M., M. Mansor, M. Musthafah, M. Akop, A. Putra, and M. Abdullah. “Computation of Eigenvalue-Eigenvector and Harmonic Motion Solution for Laminated Rubber-Metal Spring”. Journal of Engineering and Technology (JET), vol. 6, no. 2, Dec. 2015, pp. 151-64, https://jet.utem.edu.my/jet/article/view/529.