EN ISO 11665-3:2015 環境中放射性的測量.大氣:氡-222.第3部分:其短期衰變產物潛在α能量濃度現場測量法(ISO 11665-3:2012)
Measurement of radioactivity in the environment - Air: radon-222 Part 3: Spot measurement method of the potential alpha energy concentration of its short-lived decay products