%% You should probably cite draft-ietf-opsawg-ipfix-mpls-sr-label-type instead of this I-D.
@techreport{tgraf-ipfix-mpls-sr-label-type-04,
    number =    {draft-tgraf-ipfix-mpls-sr-label-type-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-tgraf-ipfix-mpls-sr-label-type/04/},
    author =    {Thomas Graf},
    title =     {{Export of MPLS Segment Routing Label Type Information in IP Flow Information Export (IPFIX)}},
    pagetotal = 6,
    year =      ** No value found for 'doc.pub_date.year' **,
    month =     ** No value found for 'doc.pub_date' **,
    day =       ** No value found for 'doc.pub_date.day' **,
    abstract =  {This document introduces additional code points in the mplsTopLabelType Information Element for IS-IS, OSPFv2, OSPFv3 MPLS Segment Routing (SR) extensions and a new SID type element to enable Segment Routing label and segment type information in IP Flow Information Export (IPFIX).},
}