%% You should probably cite rfc1621 instead of this I-D.
@techreport{ietf-pip-architecture-01,
    number =    {draft-ietf-pip-architecture-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-pip-architecture/01/},
    author =    {Paul Francis},
    title =     {{Pip Near-term Architecture}},
    pagetotal = 51,
    year =      1993,
    month =     jun,
    day =       15,
    abstract =  {The purpose of this RFC and the companion RFC "Pip Header Processing" are to record the ideas (good and bad) of Pip. This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind.},
}