M. Długosz-Lisiecka, M. Krystek, P. Raczyński, E. Głuszek, B. Kietlińska-Michalik, M. Niechwedowicz,Indoor 222Rn concentration in the exhibition and storage rooms of Polish geological museums, Applied Radiation and Isotopes, 121 (2017) 12-15, DOI: 10.1016/j.apradiso.2016.12.020