INTERNATIONAL ATOMIC ENERGY AGENCY, INTERNATIONAL WORKING GROUP ON FAST REACTORS MEETING OF SPECIALISTS ON SODIUM--WATER REACTIONS, ARGONNE, USA, 5--6 NOVEMBER 1968, report, October 31, 1970; (https://digital.library.unt.edu/ark:/67531/metadc870785/m1/1/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .