1. L. Andrieux and A. Barbetti, “The Alkali Borides,”Compt. Rend., 194, 1573–1574 (1932) in French. (Equi Diagram; Experimental)
2. R. Kiessling, “Borides of Some Transition Elements,”Acta Chem. Scand., 4, 209–227 (1950). (Equi Diagram, Crys Structure; Theory)
3. L. Ya. Markovskii and Yu.D. Kondrashev, “Composition and the Properties of the Borides of Groups I and II of the Periodic System,”Zh. Neorg. Khim., 2, 34–41 (1957) in Russian. (Equi Diagram; Experimental)
4. C.P. Tally, S. LaPlaca, and B. Post, “New Polymorph of Boron,”Acta Crystallogr., 13, 271–272 (1960). (Equi Diagram, Crys Structure; Experimental)
5. D.R. Secrist, “The Lithium-Boron-Carbon System,” USAEC Rep. KAPL-2182, 33 p (1962). (Equi Diagram; Experimental)