1. H.R. de Forcrand, “Preparation of Li2O,”C.R. Hebd. Séances Acad. Sci.,130, 1465–1468 (1900) in French. (Equi Diagram, Thermo; Experimental)
2. H.R. de Forcrand, “New Method of Preparation of Li2O. Heat of Solution,”C.R. Hebd. Séances Acad. Sci, 144,1402–1404 (1907) in French. (Equi Diagram, Thermo; Experimental)
3. J.M. Bijvoet and A. Karssen, “X-Ray Investigation of the Crystal Structure of Li2O,” Rec. Trav. Chim. Pays-Bas,43, 680–684 (1924). (Equi Diagram, Crys Structure; Experimental)
4. M. Tzentnershver and M. Blumenthal, “Formation and Dissociation of the Peroxides of the Alkali Metals,”Bull. Intern. Acad. Pol, Classe Sci. Math. Nat. A, 499–522 (1933) in French. (Equi Diagram; Experimental)
5. E. Zintl, A. Harder, and B. Dauth, “Lattice Structure of the Oxides, Sulfides, Selenides and Tellurides of Li, Na and K,”Z. Eletrochem.,40(8), 588–593 (1934) in German. (Equi Diagram, Crys Structure; Experimental)