Alfaro, R., Segovia, N., Peña, P., López, M. B. E., Armienta, M. A., Ragel, J., & Seidel , J. L. (2002). Radon behavior in springs and wells around Cuitzeo lake, Lerma river basin, Mexico. Geofísica Internacional, 25(4), 439–445. https://doi.org/10.22201/igeof.00167169p.1986.25.4.774