Yuichi Komano Kazuo Ohta Atsushi Shimbo Shin-ichi Kawamura Toward the Fair Anonymous Signatures: Deniable Ring Signatures. 54-64 2007 90-A IEICE Transactions 1 http://dx.doi.org/10.1093/ietfec/e90-a.1.54 db/journals/ieicet/ieicet90a.html#KomanoOSK07