Jan Camenisch Markulf Kohlweiss Claudio Soriente An Accumulator Based on Bilinear Maps and Efficient Revocation for Anonymous Credentials. 481-500 2009 Public Key Cryptography http://dx.doi.org/10.1007/978-3-642-00468-1_27 conf/pkc/2009 db/conf/pkc/pkc2009.html#CamenischKS09