%% You should probably cite rfc2566 instead of this I-D.
@techreport{ietf-ipp-model-11,
    number =    {draft-ietf-ipp-model-11},
    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-ipp-model/11/},
    author =    {Robert G. Herriot and Scott A. Isaacson and Thomas N. Hastings and Patrick Powell and Roger deBry},
    title =     {{Internet Printing Protocol/1.0: Model and Semantics}},
    pagetotal = 173,
    year =      1998,
    month =     nov,
    day =       19,
    abstract =  {This document describes a simplified model consisting of abstract objects, their attributes, and their operations that is independent of encoding and transport. This document also addresses security, internationalization, and directory issues. This memo defines an Experimental Protocol for the Internet community.},
}