%% You should probably cite draft-xpbs-pce-topology-filter or draft-xiong-pce-nrp-id instead of this I-D.
@techreport{peng-pce-te-constraints-00,
    number =    {draft-peng-pce-te-constraints-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-peng-pce-te-constraints/00/},
    author =    {Shaofu Peng and Quan Xiong},
    title =     {{PCEP Extension for TE Constraints}},
    pagetotal = 11,
    year =      2019,
    month =     jul,
    day =       30,
    abstract =  {This document proposes a set of constraints for PCEP to configure PCE to use specific virtual network topology or application attributes during path computation. A simple COLOR parameter is also introduced to simplify network operations.},
}