G. Reyes-Morales, V. Guerrero-Hernandez, B. Ríos-Ataxca, O. Ortiz-Aguilar, and E. Cruz-Lázaro, “Methodology for the restoration and commissioning of a CNC milling machine”, Nexo Scientific Journal, vol. 32, no. 02, pp. 179–189, Dec. 2019.