%% You should probably cite rfc9094 instead of this I-D.
@techreport{ietf-ccamp-wson-yang-16,
    number =    {draft-ietf-ccamp-wson-yang-16},
    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-ccamp-wson-yang/16/},
    author =    {Young Lee and Dhruv Dhody and Aihua Guo and Victor Lopez and Daniel King},
    title =     {{A YANG Data Model for WSON Optical Networks}},
    pagetotal = 74,
    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 provides a YANG data model for the routing and wavelength assignment (RWA) TE topology in wavelength switched optical networks (WSONs).},
}