[1]
Nguyen, C.D. et al. 2017. Factors controlling 226Ra, 228Ra and their activity ratio in groundwater – an application in Polish Carpathian mineral waters.
Geology, Geophysics and Environment. 42, 3 (Feb. 2017), 337. DOI:
https://doi.org/10.7494/geol.2016.42.3.337.