2ADAMS C, LLOYD S. Understanding PKI: Concepts,Standards, and Deployment Considerations, 2nd ed. Reading (MA): Addison-Wesley Pub Co, 2002.
3NASH A, DUANE W, JOSEPH C et al. PKI: Implementing and Managing E-Security. New York: McGraw Hill, 2002.
4MYERS M, ANKNEY R, MALPANI A et al. X. 509 Internet Public Key Infrastructure Online Certificate Status ProtocolOCSP. Network Working Group, RFC 2560. 1999.
5ADAMS C, CAIN P, PINKAS D et al. Internet X. 509 Public Key Infrastructure Time Stamp Protocol (TSP). Network Working Group, RFC 3161. 2001.
