Ningnian, Gou, et al. “Numerical Simulation of Temperature Field in Ultra-Narrow Arc Welding of Thick-Walled Steam Turbine Valve Body Material”. International Journal of Integrated Engineering, vol. 14, no. 8, Dec. 2022, pp. 126-35, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/13028.