%% You should probably cite rfc9504 instead of this I-D.
@techreport{ietf-pce-pcep-stateful-pce-gmpls-18,
    number =    {draft-ietf-pce-pcep-stateful-pce-gmpls-18},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-pce-pcep-stateful-pce-gmpls/18/},
    author =    {Young Lee and Haomian Zheng and Oscar Gonzalez de Dios and Victor Lopez and Zafar Ali},
    title =     {{Path Computation Element Communication Protocol (PCEP) Extensions for Stateful PCE Usage in GMPLS-controlled Networks}},
    pagetotal = 25,
    year =      2022,
    month =     jun,
    day =       16,
    abstract =  {The PCE communication Protocol (PCEP) has been extended to support stateful PCE functions where the Stateful PCE maintains information about paths and resource usage within a network, but these extensions do not cover all requirements for GMPLS networks. This document provides extensions required for PCEP so as to enable the usage of a stateful PCE capability in GMPLS-controlled networks.},
}