1. Darby S, Hill D, Auvinen A, Barros-Dios JM, Baysson H, Bochicchio F, Deo H, Falk R, Forastiere F, Hakama M, Heid I, Kreienbrock L, Kreuzer M, Lagarde F, Mäkeläinen I, Muirhead C, Oberaigner W, Pershagen G, Ruano Ravina A, Ruosteenoja E, Rosario AS, Tirmarche M, Tomásek L, Whitley E, Wichmann H-E, Doll R (2005) Radon in homes and risk of lung cancer: collaborative analysis of individual data from 13 European case-control studies. BMJ. doi: 10.1136/bmj.38308.477650.63
2. UNSCEAR (2000) Sources and effects of ionizing radiation, vol II., Effects, Annex B, United Nations, New York
3. Smethurst MA, Strand T, Sundal AV, Rudjord AL (2008) Large-scale radon hazard evaluation in the Oslofjord region of Norway utilizing indoor radon concentrations, airborne gamma ray spectrometry and geological mapping. Sci Total Environ 407(1):379–393
4. Stranden E (1986) Radon-222 in Norwegian dwellings proceedings of the symposium on radon and its decay products: occurrence, properties and health effects. American chemical society symposium series 331:70–83
5. De Cort M (2010) Advances in radon mapping. J Environ Radioact 101:785–894