%% You should probably cite draft-ietf-pce-pcep-flowspec instead of this I-D.
@techreport{li-pce-pcep-flowspec-01,
    number =    {draft-li-pce-pcep-flowspec-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-li-pce-pcep-flowspec/01/},
    author =    {Zhenbin Li and Dhruv Dhody and Cyril Margaria and Colby Barth and Xia Chen and Shunwan Zhuang},
    title =     {{PCEP Extension for Flow Specification}},
    pagetotal = 18,
    year =      2016,
    month =     jul,
    day =       8,
    abstract =  {Dissemination of the traffic flow specifications was first introduced in the BGP protocol via RFC 5575. In order to distribute the flow specifications from PCE controller to network device without BGP protocol it is desirable to extend PCEP with flow specification information. This document specifies a set of extensions to PCEP to support dissemination of flow specifications. The extensions include the instantiation, updation and deletion of flow specifications.},
}