P. P. Rodríguez, R. B. Pérez-Sáez, V. Recarte, J. M. Millán, O. A. Ruano, and M. L. Nó, “Fracture behaviour of Cu-Al-Ni shape memory alloys obtained by powder metallurgy”, Rev. metal., vol. 37, no. 2, pp. 194–198, Apr. 2001.