1. C. Adams, P. Cain, D. Pinkas, R. Zuccherato, Internet X.509 Public Key Infrastructure Time-Stamp Protocol (TSP), RFC 3161. IETF (2001).
2. C. Adams, P. Sylvester, M. Zolotarev, R. Zuccherato, Internet X.509 Public Key Infrastructure Data Validation and Certification Server Protocols (DVCS), RFC 3029. IETF (2001).
3. Assistant Secretary Of Defense For Command, Control, Communications And Intelligence, 2002: Design Criteria Standard for Electronic Records Management Software Applications — DoD-5015.2-STD. Department Of Defense Office of DASD.
4. R. Brandner, U. Pordesch, T. Gondrom, Evidence Record Syntax (ERS), Internet draft, draft-ietf-ltans-ers-05.txt. IETF (2006).
5. Time-Stamping with Binary Linking Schemes;Buldas,1998