%% You should probably cite rfc2638 instead of this I-D.
@techreport{nichols-diff-svc-arch-02,
    number =    {draft-nichols-diff-svc-arch-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-nichols-diff-svc-arch/02/},
    author =    {Lixia Zhang and Van Jacobson and Kathleen Nichols},
    title =     {{A Two-bit Differentiated Services Architecture for the Internet}},
    pagetotal = 26,
    year =      1999,
    month =     may,
    day =       19,
    abstract =  {This document presents a differentiated services architecture for the internet. This memo provides information for the Internet community.},
}