F. A. Favid, B. Alvin, M. N. Fikri, A. Budiman, M. F. Sariman, and S. Idek, “Pipe Welding Jig for Greater Ease and Precision”, Int. J. Multidiscip. Appl. Bus. Edu. Res., vol. 6, no. 7, pp. 3399–3404, Jul. 2025, doi: 10.11594/ijmaber.06.07.15.