54,B Cox,J D Tygan M Sirbu.NetBill Security and Transaction Protocol.In Proceedings of the FIRST USENIX Workshop on Electronic Commerce,1996
65,B Fairthore,ed.OMG White Paper on Security.1994.4
76,IBM Research,iKP-A Family of Secure Electronic Payment Protocols(WORKING DRAFT).IBM,1995.3
87,P Loshin.Extranet Design and Implementation.SYBEX Inc.,1997
98,S H Low,N F Maxemchuk,S Paul.Anonymous Credit Cards.In Proceedings of the 2nd ACM Conference on Computer and Communication Security,1994.11
109,G Medvinsky,B C Neuman.Netcash,A design for practical electronic currency on the Internet.In Proceedings of the FIRST Conference on Computer and Communications Security,1993.11