The effect of nickel on the microstructure and property of Cu-Al-Nb shape memory alloys T.A.A. Melo, R.M. Gomes, C.J. Araujo, R.E. Coelho and S.J.G. de Lima J. Phys. IV France, 112 (2003) 549-552 DOI: 10.1051/jp4:2003945