Солодовнікова, Л.М. and Тарасов, В.О. 2013. Reference source of the radon-222 for modern technology of environmental monitoring in radioactive waste storages. Eastern-European Journal of Enterprise Technologies. 3, 11(63) (Jun. 2013), 41–45. DOI:https://doi.org/10.15587/1729-4061.2013.14595.