HAN, Le Duy. Research of Welding P91 steel with Shielded Metal Arc Welding (SMAW) and Gas Tungsten Arc Welding (GTAW) processes. Old Journal, [S. l.], n. 117, p. 49–53, 2017. Disponível em: https://jst.vn/index.php/old/article/view/454. Acesso em: 2 aug. 2025.