Omirou M., Leontaris F., Xarchoulakos D.C., Kehagia K., Clouvas A. and Potiriadis C. 2022. Time variation of radon in tap water in locations of a Greek area with geological background for elevated radon-in-water concentrations and correlation study between radon, gross alpha, uranium, and radium concentrations. Journal of the European Radon Association. 3, (Nov. 2022). DOI:https://doi.org/10.35815/radon.v3.8865.