(1)
SMETANOVÁ, I.; MÜLLEROVÁ, M.; HOLÝ, K.; MORAVCSÍK, A.; KOVÁCS, T.; CSORDÁS, A.; NEZNAL, M.; NEZNAL, M.; KOZAK, K.; MAZUR, J.; GRZADZIEL, D. The Results of Integration Measurements of Indoor Radon Activity Concentration in Houses in Ružomberok Town (Northern Slovakia). Contrib. Geophys. Geod. 2015, 45, 41-51.