M.N. Mohammed, M.Z. Omar, J. Syarif, Z. Sajuri, M.S. Salleh, & K.S. Alhawari. (2013). Investigations on Thixojoining Process of Steel Components. Journal of Mechanical Engineering and Sciences, 5(1), 639–645. https://doi.org/10.15282/jmes.5.2013.10.0061