1. W.H. Zachariasen and F.H. Ellinger, “Crystal Chemical Studies of the 5f-Series of Elements. XXIV. The Crystal Structure and Thermal Expansion of γ-Plutonium,≓Acta Crystallogr., 8,431–433 (1955). (Crys Structure; Experimental)
2. F.H. Ellinger, “Crystal Structure of Delta-Prime Plutonium and the Thermal Expansion Characteristics of Delta, Delta-Prime, and Ep- silon Plutonium,≓Trans. AIME-J. Met., 8, 1256–1259 (1956). (Crys Structure; Experimental)
3. B.W. Howlett, “A Note on the Uranium-Boron Alloy System,≓J. Inst. Met, 88,91–92(1959-1960). (Equi Diagram; Experimental)
4. B. J. McDonald and W.I. Stuart, “The Crystal Structures of Some Plutonium Borides,≓Acta Crystallogr., 13, 447–448 (1960). (Equi Diagram, Crys Structure; Experimental)
5. R.E. Skavdahl, “Plutonium-Boron System,≓ USAEC Rep. HW- 76302, Article 2.4 (April–June 1963). (Equi Diagram; Experimental)