Stamoulis, K.C., Tsiligou, Z., Aslanoglou, X. and Ioannides, K.G. 2019. Variation of both tritium (3H) and beryllium (7Be) concentrations in air, rain and humidity samples collected at Ioannina, North-western Greece. HNPS Advances in Nuclear Physics. 26, (Apr. 2019), 219–222. DOI:https://doi.org/10.12681/hnps.1823.