Effects of Fe and Co addition on the magnetoresistance in Ni-Mn-Ga films K. Koike, M. Ohtsuka, M. Matsumoto, Y. Adachi, T. Takagi and H. Kato Eur. Phys. J. Special Topics, 158 (2008) 143-148 Published online: 01 May 2008 DOI: 10.1140/epjst/e2008-00667-1