%O Book %T Application of the Graded Approach to Post-closure Safety Assessment for the Disposal of Disused Sealed Radioactive Sources in Boreholes %A %U https://www.iaea.org/publications/14734/application-of-the-graded-approach-to-post-closure-safety-assessment-for-the-disposal-of-disused-sealed-radioactive-sources-in-boreholes %D 2020 %I INTERNATIONAL ATOMIC ENERGY AGENCY %C Vienna