Mir, J., a., and L. Rodríguez-Fernández. “Energy Calibration of a Small Accelerator Using Proton Induced X-Ray Emission and Ion Backscattering”. Revista Mexicana De Física, vol. 42, no. 5, Jan. 1995, pp. 826-31, https://rmf.smf.mx/ojs/index.php/rmf/article/view/2618.