James Mc Laughlin (Emeritus Professor, UCD, Dublin) has recently published a paper about an overview of the main components of natural radiation: https://t.co/Mkc844WYK6 Citation: Radiation Environment and Medicine, 2022, Volume 11, Issue 1, Pages 1-6 #openaccess https://t.co/5SjrWKL0s9

Intercomparisons are an excellent tool to ensure the quality of radon measurements. M. Janik published a paper in 2017 to review intercomparisons of radon and thoron monitors carried out by four institutions (Jpn. J. Health Phys., 52 (2)): https://t.co/lU05d32S5X https://t.co/4HeEDuqqGy