Z. Salleh, N. R. N. M.Masdek, Y. M. Taib, and F. A. Ghazali, “Hemispherical Low Blow Impact Treatment Spot-welded Joint”, IJET, vol. 7, no. 4.18, pp. 350–353, Nov. 2018, doi: 10.14419/ijet.v7i4.18.21948.