Angeles, A., E. Quintero, I. Gaso, C. P. Zepeda, T. Palma, and P. V. Rojas. “Measurement of Content of 226Ra in Drinking Water From Some States of Mexican Republic by Liquid Scintillation Method”. Journal of Nuclear Physics, Material Sciences, Radiation and Applications 7, no. 2 (February 28, 2020): 195–201. Accessed June 18, 2024.