TWO WAY SHAPE MEMORY EFFECT OBTAINED BY STABILISED STRESS INDUCED MARTENSITE IN Cu-Zn-Al-Co AND Cu-Al-Mn ALLOYS B.G. MELLOR, J.M. GUILEMANY et J. FERNANDEZ J. Phys. IV France, 01 C4 (1991) C4-457-C4-462 DOI: 10.1051/jp4:1991469