Hernandez, Maria Cristina, Dario Romero, Humberto Torres, Javier Miranda, and A. Enrique-Hernandez-Lopez. 2017. “X-Ray Fluorescence Analysis of Ground Coffee”. Journal of Nuclear Physics, Material Sciences, Radiation and Applications 5 (1):25-34. https://doi.org/10.15415/jnp.2017.51003.