Spin-flip assisted tunneling through quantum dot based magnetic tunnel junctions M. J. Ma, M. B.A. Jalil, S. G. Tan and D. E. Koh Eur. Phys. J. B, 82 1 (2011) 37-46 Published online: 29 June 2011 DOI: 10.1140/epjb/e2011-20149-3