%% You should probably cite rfc3143 instead of this I-D.
@techreport{cooper-wrec-known-prob-01,
    number =    {draft-cooper-wrec-known-prob-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-cooper-wrec-known-prob/01/},
    author =    {John Dilley and Ian Cooper},
    title =     {{Known HTTP Proxy/Caching Problems}},
    pagetotal = 32,
    year =      2001,
    month =     apr,
    day =       13,
    abstract =  {This document catalogs a number of known problems with World Wide Web (WWW) (caching) proxies and cache servers. The goal of the document is to provide a discussion of the problems and proposed workarounds, and ultimately to improve conditions by illustrating problems. This memo provides information for the Internet community.},
}