Duong, Nguyen, 		Nguyet, Nguyen, 		Huong, Nguyen, 		Schimmelamann, Jan, 		Thai, Nguyen, AND 		Schimmelmann, Arndt.
" Radon Concentrations and their Controlling Factors in  Mud-built Houses in Dong Van Plateau Karst Geopark,  Ha Giang Province" <em>VNU Journal of Science: Earth and Environmental Sciences</em> [Online], Volume 36 Number 1 (11 March 2020)