1. A.G.C. Gwyer, “On the Alloys of Al with Cu, Fe, Ni, Co, Pb, and Cd,”Z. Anorg. Chem., 57, 113–153 (1908) in German. (Equi Diagram; Experimental)
2. W. Ekman, “Structural Analogies of the Binary Alloys of Transition Metals with Zn, Cd, and Al,”Z. Phys. Chem. B, 12, 57–78 (1930) in German. (Equi Diagram, Crys Structure; Experimental)
3. W.L. Fink and H.R. Freche, “Equilibrium Relations in Al-Co Alloys of High Purity,”Trans. AIME, 99, 141–148 (1932). (Equi Diagram; Experimental)
4. W. Koester, “The System Fe-Co-Al,”Arch. Eisenhüttenwes., 7, 263–264 (1933) in German. (Equi Diagram; Experimental)
5. U. Haschimoto, “Relation Between the Allotropic Transformation of Co and Some Additional Elements,”Nippon Kinzoku Gakkaishi, 1, 177–190 (1937) in Japanese. (Magnetism; Experimental)