%% You should probably cite draft-ietf-ntp-ntpv5-09 instead of this revision.
@techreport{ietf-ntp-ntpv5-04,
    number =    {draft-ietf-ntp-ntpv5-04},
    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-ntp-ntpv5/04/},
    author =    {Miroslav Lichvar and Tal Mizrahi},
    title =     {{Network Time Protocol Version 5}},
    pagetotal = 35,
    year =      ,
    month =     ,
    day =       ,
    abstract =  {This document describes version 5 of the Network Time Protocol (NTP).},
}