Man Ho Au Patrick P. Tsang Willy Susilo Yi Mu Dynamic Universal Accumulators for DDH Groups and Their Application to Attribute-Based Anonymous Credential Systems. 295-308 2009 CT-RSA http://dx.doi.org/10.1007/978-3-642-00862-7_20 conf/ctrsa/2009 db/conf/ctrsa/ctrsa2009.html#AuTSM09