%% You should probably cite draft-ietf-isis-segment-routing-extensions instead of this I-D.
@techreport{previdi-isis-segment-routing-extensions-00,
    number =    {draft-previdi-isis-segment-routing-extensions-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-previdi-isis-segment-routing-extensions/00/},
    author =    {Stefano Previdi and Clarence Filsfils and Ahmed Bashandy and Bruno Decraene and Stephane Litkowski and Rudiger Geib and Igor Milojevic and Rob Shakir and Saku Ytti and Wim Henderickx and Jeff Tantsura},
    title =     {{IS-IS Extensions for Segment Routing}},
    pagetotal = 22,
    year =      2013,
    month =     jun,
    day =       28,
    abstract =  {Segment Routing (SR) allows for a flexible definition of end-to-end paths within IGP topologies by encoding paths as sequences of topological sub-paths, called "segments". These segments are advertised by the link-state routing protocols (IS-IS and OSPF). This draft describes the necessary IS-IS extensions that need to be introduced for Segment Routing.},
}