Mohammed, A.A, et al. “Effect of Sodium Hydroxide on the Tensile Properties of Sugar Palm Fibre Reinforced Thermoplastic Polyurethane Composites”. Journal of Mechanical Engineering and Sciences, vol. 10, no. 1, June 2016, pp. 1765-77, https://doi.org/10.15282/jmes.10.1.2016.2.0170.