%% You should probably cite rfc2681 instead of this I-D.
@techreport{ietf-ippm-rt-delay-01,
    number =    {draft-ietf-ippm-rt-delay-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-ietf-ippm-rt-delay/01/},
    author =    {Sunil Kalidindi and Matthew J. Zekauskas and Dr. Guy T. Almes},
    title =     {{A Round-trip Delay Metric for IPPM}},
    pagetotal = 20,
    year =      1999,
    month =     may,
    day =       3,
    abstract =  {This memo defines a metric for round-trip delay of packets across Internet paths. {[}STANDARDS-TRACK{]}},
}