Selle, J.E.; English, J.J.; Teaney, P.E. & McDougal, J.R. COMPATIBILITY OF $sup 238$PuO$sub 2$ WITH VARIOUS REFRACTORY METALS AND ALLOYS: INTERIM REPORT., report, January 1, 1970; (https://digital.library.unt.edu/ark:/67531/metadc867957/m1/1/: accessed December 10, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .