%% You should probably cite rfc9209 instead of this I-D.
@techreport{ietf-httpbis-proxy-status-00,
    number =    {draft-ietf-httpbis-proxy-status-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-httpbis-proxy-status/00/},
    author =    {Mark Nottingham and Piotr Sikora},
    title =     {{The Proxy-Status HTTP Header Field}},
    pagetotal = 18,
    year =      2019,
    month =     may,
    day =       7,
    abstract =  {This document defines the Proxy-Status HTTP header field to convey the details of errors generated by HTTP intermediaries. Note to Readers \_RFC EDITOR: please remove this section before publication\_ Discussion of this draft takes place on the HTTP working group mailing list (ietf-http-wg@w3.org), which is archived at https://lists.w3.org/Archives/Public/ietf-http-wg/ {[}1{]}. Working Group information can be found at https://httpwg.org/ {[}2{]}; source code and issues list for this draft can be found at https://github.com/httpwg/http-extensions/labels/proxy-status {[}3{]}.},
}