DIN IEC 61275-2014 辐射防护仪器. 环境中放射性核素的测量. 使用锗探测器的现场光子光谱测定系统 (IEC 61275-2013)
Radiation protection instrumentation - Measurement of discrete radionuclides in the environment - In situ photon spectrometry system using a germanium detector (IEC 61275:2013)