TRAN, Lam. Deep Penetration Welding of 12-mm Thick Section Steels with No Groove by Plasma-Gmaw Hybrid Welding Process. Old Journal, [S. l.], n. 138B, p. 7–11, 2019. Disponível em: https://jst.vn/index.php/old/article/view/587. Acesso em: 2 aug. 2025.