Macroscopic oscillations between two weakly coupled Bose-Einstein condensates A. Smerzi, A. Trombettoni, T. Lopez-Arias, C. Fort, P. Maddaloni, F. Minardi and M. Inguscio Eur. Phys. J. B, 31 4 (2003) 457-461 Published online: 06 March 2003 DOI: 10.1140/epjb/e2003-00055-1