@inproceedings{Hofmann2016, author = {Michael Hofmann}, title = {Proficiency test of commercial radon monitors for low level radon exhalation measurements in chambers with air exchange}, booktitle = {8th International Conference on Protection against Radon at Home and at Work and 13th International Workshop on the Geological Aspects of Radon Risk Mapping - Book of abstracts}, editor = {L. Thinov{\´a}}, pages = {21 -- 21}, url = {http://www.radon2016.cz/download/radon2016-el.pdf?attredirects=0\&d=1}, year = {2016}, }