Pirbodaghi, T., S. H. Hoseini, and S. Akbari. “Vibration Analysis of Nonlinear Systems Modelled by a Mass Attached to a Stretched Elastic Wire”. European Journal of Computational Mechanics, vol. 25, no. 4, Jan. 2016, pp. 329-38, https://journals.riverpublishers.com/index.php/EJCM/article/view/814.