Qianhong Wu Yi Mu Willy Susilo Bo Qin Josep Domingo-Ferrer Asymmetric Group Key Agreement. 153-170 2009 EUROCRYPT http://dx.doi.org/10.1007/978-3-642-01001-9_9 conf/eurocrypt/2009 db/conf/eurocrypt/eurocrypt2009.html#WuMSQD09