%O Book %T Worldwide Open Proficiency Test: Determination of Naturally Occurring Radionuclides in Phosphogypsum and Water %A %U http://www.dgdingfa.net/publications/8480/worldwide-open-proficiency-test-determination-of-naturally-occurring-radionuclides-in-phosphogypsum-and-water %D 2010 %I INTERNATIONAL ATOMIC ENERGY AGENCY %C Vienna