Raptis, C., Savidou, A. και Kritidis, P. 2019. A Study of Cover Materials Which Influence Rn222 Exhalation Indoors. Annual Symposium of the Hellenic Nuclear Physics Society. 7, (Δεκεμβρίου 2019), 177–182. DOI:https://doi.org/10.12681/hnps.2416.