@article{Hoffman_2012,
title={Lung cancer risk from radon and progeny and statement on radon. ICRP publication 115,
Ann. ICRP 40(1)},
volume={151},
ISSN={1742-3406},
url={http://dx.doi.org/10.1093/rpd/ncs093},
DOI={10.1093/rpd/ncs093},
number={1},
journal={Radiation Protection Dosimetry},
publisher={Oxford University Press (OUP)},
author={Hoffman,
F. O.},
year={2012},
month=may,
pages={199–201} }