%% You should probably cite rfc3321 instead of this I-D.
@techreport{ietf-rohc-sigcomp-extended-04,
    number =    {draft-ietf-rohc-sigcomp-extended-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-rohc-sigcomp-extended/04/},
    author =    {Ka-Cheong Leung and Hans Hannu and Richard Price and Zhigang Liu and Stefan Forsgren and Jan Christoffersson},
    title =     {{Signaling Compression (SigComp) - Extended Operations}},
    pagetotal = 19,
    year =      2002,
    month =     jun,
    day =       3,
    abstract =  {This document describes how to implement certain mechanisms in SigComp (Signaling Compression), RFC XXX, which can significantly improve the compression efficiency compared to using simple per- message compression. SigComp uses a UDVM (Universal Decompressor Virtual Machine) for decompression, and the mechanisms described in this document are possible to implement using the UDVM instructions defined in RFC XXX.},
}