HTTP Extensions for Distributed Authoring -- WEBDAV. Y. Goland, E. Whitehead, A. Faizi, S. Carter, D. Jensen. February 1999. http://www.faqs.org/rfcs/rfc2518.html
Internet X.509 Public Key Infrastructure Representation of Key Exchange Algorithm (KEA) Keys in Internet X.509 Public Key Infrastructure Certificates. R. Housley, W. Polk. March 1999. http://www.faqs.org/rfcs/rfc2528.html
Internet Printing Protocol/1.0: Model and Semantics. R. deBry, T. Hastings, R. Herriot, S. Isaacson, P. Powell. April 1999. http://www.faqs.org/rfcs/rfc2566.html