Sirbu, Marvin A; "Internet Billing Service Design and Implementation", 1993. |
Cox, Benjamin T.H.; "Maintaining privacy in Electronic Transactions", Aug. 1994. |
Sirbu, Marvin; J.D. Tygar; NetBill: An Internet Commerce System Optimized for Network Delivered Services, Mar. 1995. |
Cox, Benjamin; tygar, J.D.; Sirbu, Marvin; NetBill Security and Transaction Protocol, Jul. 1995. |
Schneier, Bruce; Applied Cryptography: protocols, algorithms, and source code:, library of congress No. TX-4-216-579, Oct. 1995. |
http:/www.ini.cmu.edu/netbill/pubs.html, Apr. 1997. |
PC Magazine; vol. 13; No. 18, p. 87; ISSN: 0888-8507; "Needed: A Fee-Based Internet"; Bill Machrone, Oct. 1994. |
Information Week; Client-Server; p. 84; "A Standard For Saftery--Net Providers Strive For Encryption and Authentication", Jan. 1995. |