Ghannadiasl, A. “Quintic B-Spline Collocation Method for Numerical Solution of Free Vibration of Tapered Euler-Bernoulli Beam on Variable Winkler Foundation”. Journal of Mechanical Engineering and Sciences, vol. 15, no. 2, June 2021, pp. 8193-04, doi:10.15282/jmes.15.2.2021.18.0643.