Hutter, A R An international intercomparison of soil gas radon and radon exhalation measurements. [electronic resource] - Health physics Jan 1998 - 108-14 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0017-9078 Standard No.: 10.1097/00004032-199801000-00014 doi Subjects--Topical Terms: Air Pollutants, Radioactive--analysisEnvironmental Monitoring--methodsInternational CooperationRadon--analysisReference StandardsReference ValuesSoil Pollutants, Radioactive--analysis