1. Preston, G.D., 'An X-ray Investigation of some Copper-Aluminium Alloys', Philos. Mag., 12, 980-993 (1931)
2. Dwight, A.E., Mueller, M.H., Conner Jr., R.A., Downey, J.W., Knott, H., 'Ternary Compounds with the Fe2P-Type Structure', Trans. Met. Soc. AIME, 242, 2075-2080 (1968)
3. Buschow, K.H.J., 'The Erbium-Copper System', Philips J. Res., 25, 227-230 (1970)
4. Oesterreicher, H., 'Structural and Magnetic Studies on Rare Earth Compounds RNiAl and RCuAl', J. Less-Common Met., 30, 225-236 (1973)
5. Oesterreicher, H., 'Constitution of Aluminum Base Rare Earth Alloys RT2-RAl2 (R = Pr, Gd, Er; T = Mn, Fe, Co, Ni, Cu)', Inorg. Chem., 13, 2807-2811 (1974)