DIN EN 61577-3:2015
輻射防護檢測儀表.氡和氡降解產品的測量儀器.第3部分:氡降解產品的測量儀器特殊要求(IEC 61577-3-2011, 修正);德文版本EN 61577-3-2014
Radiation protection instrumentation - Radon and radon decay product measuring instruments - Part 3: Specific requirements for radon decay product measuring instruments (IEC 61577-3:2011, modified); German version EN 61577-3:2014