Guerra-Álvarez, J., J. A. Pozo-Morejón, A. Cruz-Crespo, and J. V. Miguel-Oria. “STUDY OF THE HARDNESS IN THE HEAT AFFECTED ZONE IN WELDING OF A 4130 AISI STEEL HARDENED BY HEAT TREATMENT”. Centro Azúcar Journal, vol. 46, no. 1, Jan. 2019, p. 8, http://centroazucar.uclv.edu.cu/index.php/centro_azucar/article/view/40.