DIN EN ISO 11665-7-2015 环境辐射性测量.空气:氡-222.第7部分:评估表面蒸发率用累积法(ISO 11665-7-2012);德文版本EN ISO 11665-7-2015
Measurement of radioactivity in the environment - Air: radon-222 - Part 7: Accumulation method for estimating surface exhalation rate (ISO 11665-7:2012); German version EN ISO 11665-7:2015