Nguyet, N. T. A., N. T. Duong, A. Schimmelmann, and N. V. Huong. “Human Exposure to Radon Radiation Geohazard in Rong Cave, Dong Van Karst Plateau Geopark, Vietnam”. Vietnam Journal of Earth Sciences, vol. 40, no. 2, May 2018, pp. 117-25, doi:10.15625/0866-7187/40/2/11092.