%% You should probably cite rfc2756 instead of this I-D.
@techreport{vixie-htcp-proto-05,
    number =    {draft-vixie-htcp-proto-05},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-vixie-htcp-proto/05/},
    author =    {Duane Wessels and Paul A. Vixie},
    title =     {{Hyper Text Caching Protocol (HTCP/0.0)}},
    pagetotal = 15,
    year =      1999,
    month =     aug,
    day =       17,
    abstract =  {This document describes HTCP, a protocol for discovering HTTP caches and cached data, managing sets of HTTP caches, and monitoring cache activity. This is an experimental protocol, one among several proposals to perform these functions. This memo defines an Experimental Protocol for the Internet community.},
}