Preparation of Cu-Al-Nb shape memory alloys by high energy ball milling and powder metallurgy M.C.A. da Silva, C.J. Araujol, R.E. Coelho, T.A.A. Melo, R.M. Gomes et S.J.G. de Lima J. Phys. IV France, 112 (2003) 579-582 DOI: 10.1051/jp4:2003952