Twinning in shear and uniaxial loading in five layered martensite Ni-Mn-Ga single crystals Ilkka Aaltio, Yanling Ge and Simo-Pekka Hannula Eur. Phys. J. B, 86 2 (2013) 49 Published online: 11 February 2013 DOI: 10.1140/epjb/e2012-30744-3