Montoya-Reyes, M. I., J. Ceballos-Corral, I. Mendoza-Muñoz, and O. Y. Vargas-Bernal. “Correlation Analysis of the Life Time of Coolant Used in CNC Machines and Productivity in the Metallic Industry of Mexicali”. REVISTA DE CIENCIAS TECNOLÓGICAS, vol. 5, no. 4, Dec. 2022, p. e218, doi:10.37636/recit.v5n4e218.