Supercurrent and its Fano effect in a Josephson Aharonov-Bohm ring S.-G. Cheng, Y. X. Xing, X. C. Xie and Q.-F. Sun Eur. Phys. J. B, 67 4 (2009) 551-557 Published online: 14 February 2009 DOI: 10.1140/epjb/e2009-00048-0