1. 06Don: L. Donski, “Alloys of Ca with Zn, Al, Tl, Pb, Sn, Bi, Sb and Cu,”Z. Anorg. Chem., 57, 201–205 (1908) in German. (Equi Diagram; Experimental; Indicates presence of a phase diagram.)
2. 26Edw: J.D. Edwards and C.S. Taylor, “Electrical Resistivity of Al−Ca alloys,”Trans. Am. Electrochem. Soc., 50, 391–397 (1926). (Equi Diagram; Experimental)
3. 28Boz: G. Bozza and C. Sonnino, “The Al−Ca System,”Giorn. Chim. Ind. Appl., 10, 443–449 (1928) in Italian. (Equi Diagram; Experimental; Indicates presence of a phase diagram.)
4. 28Mat: K. Matsuyama, “On the Equilibrium Diagram of the Al−Ca System,”Sci. Rep. Tohoku Univ., 17, 783–789 (1928). (Equi Diagram; Thermo; Experimental; Indicates presence of a phase diagram.) Indicates key paper.
5. 39Now: H. Nowotny and A. Mohrnheim “The Crystal Structure of Al2Ca,”,Z. Krist., A100, 540–542 (1939) in German. (Crys Structure; Experimental)