Matter-wave scattering on a BEC in a double-well potential S. Hunn, M. Hiller, A. Buchleitner, D. Cohen and T. Kottos Eur. Phys. J. D, 63 1 (2011) 55-61 Published online: 27 April 2011 DOI: 10.1140/epjd/e2011-10639-9