Displacive phase transformations and magnetic properties in Ni-Mn-Ga ferromagnetic shape memory alloys K. Tsuchiya, A. Tsutsumi, H. Nakayama, S. Ishida, H. Ohtsuka et M. Umemoto J. Phys. IV France, 112 (2003) 907-910 DOI: 10.1051/jp4:20031028