Sahu, Patitpaban, Imran Athar Beg, and D.C. Panigrahi. 2021. “Mathematical Modelling of Radon (222Rn) Exposure of Underground Mine Workers: A Comprehensive Review”. Journal of Mines, Metals and Fuels 68 (11&12):349-53. https://doi.org/10.18311/jmmf/2020/27960.