Takahashi, L., T. Santos, B. Correa, R. M. Pinheiro, M. Ângela Menezes, and Z. Rocha. “Calibration of Solid State Nuclear Track Detectors CR-39 for Radon Study in a High Concentration Underground Mines”. Brazilian Journal of Radiation Sciences, vol. 9, no. 1A, Apr. 2021, doi:10.15392/bjrs.v9i1A.1533.