Tran, Ngoc-Thien, et al. “The Influence of Heat Input in Orbital TIG Welding on Various Diameters and Thicknesses of Low-Carbon Steel Tube”. Acta Metallurgica Slovaca, vol. 31, no. 4, Dec. 2025, pp. 212-8, doi:10.36547/ams.31.4.2236.