%% You should probably cite rfc9129 instead of this I-D.
@techreport{ietf-ospf-yang-12,
    number =    {draft-ietf-ospf-yang-12},
    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-ospf-yang/12/},
    author =    {Derek M. Yeung and Yingzhen Qu and Zhaohui (Jeffrey) Zhang and Ing-Wher (Helen) Chen and Acee Lindem},
    title =     {{Yang Data Model for OSPF Protocol}},
    pagetotal = 109,
    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 defines a YANG data model that can be used to configure and manage OSPF.},
}