The following publications are possibly variants of this publication:
- Sequential Aggregate Signatures and Multisignatures Without Random OraclesSteve Lu, Rafail Ostrovsky, Amit Sahai, Hovav Shacham, Brent Waters. eurocrypt 2006: 465-485 [doi]
- Sequential Aggregate Signatures, Multisignatures, and Verifiably Encrypted Signatures Without Random OraclesSteve Lu, Rafail Ostrovsky, Amit Sahai, Hovav Shacham, Brent Waters. joc, 26(2):340-373, 2013. [doi]