%% You should probably cite draft-ietf-ipfix-a9n instead of this I-D.
@techreport{trammell-ipfix-a9n-04,
    number =    {draft-trammell-ipfix-a9n-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-trammell-ipfix-a9n/04/},
    author =    {Brian Trammell and Arno Wagner and Benoît Claise},
    title =     {{Flow Aggregation for the IP Flow Information Export (IPFIX) Protocol}},
    pagetotal = 46,
    year =      2011,
    month =     sep,
    day =       26,
    abstract =  {This document describes the export of aggregated Flow information using IPFIX. An Aggregated Flow is essentially an IPFIX Flow representing packets from multiple Original Flows sharing some set of common properties. The document describes Aggregated Flow export within the framework of IPFIX Mediators and defines an interoperable, implementation-independent method for Aggregated Flow export.},
}