1. 2) IAEA Glossary, N, https://www.iaea.org/ns/tutorials/regcontrol/intro/glossaryn.htm
2. 7) “Final Environmental Impact Statement for Standards for the Control of Byproduct Materials for Uranium Ore Processing” (40CFR192), Vol. 1, EPA 520/183-008-1, pp. 2–6, 1983
3. 8) “Rapport présenté au Conseil Supérieur d’Information Nucléaire en Octobre 1991 Résumé des recommandations”, Rapport Desgraupes, Etraits pages 3 à 23 puis 35 à 36, pp. 21, Juillet 1991
4. 9) Abel, J., Gonzalez,“Exclusion, Exemption and Clearance in the frame of the control and management of inadvertent radioactive material in scrap metal,” International Conference on Control and Management of Inadvertent Radioactive Material in Scrap Metal, Autoridad Regulatoria Nuclear, Argentine, pp. 18, Feb., 2009
5. 10) “Assessing the Need for Radiation Protection Measures in Work Involving Minerals and Raw Materials”, Safety Report Series No. 49, IAEA, pp. 11, 2006