1. Short linkable ring signatures revisited;Au,2006
2. Identity-based encryption from the weilpairing;Boneh;SIAM Journal on Computing,2003
3. Ring signatures: stronger definitions, and constructions without random oracles;Bender,2006
4. Untraceable electronic cash;Chaum,1990
5. Ring signatures of sub-linear size without random oracles;Chandran,2007