Dario Catalano Dario Fiore Mariagrazia Messina Zero-Knowledge Sets with Short Proofs. 433-450 2008 EUROCRYPT http://dx.doi.org/10.1007/978-3-540-78967-3_25 conf/eurocrypt/2008 db/conf/eurocrypt/eurocrypt2008.html#CatalanoFM08