%% You should probably cite rfc8960 instead of this I-D.
@techreport{ietf-mpls-base-yang-03,
    number =    {draft-ietf-mpls-base-yang-03},
    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-mpls-base-yang/03/},
    author =    {Syed Kamran Raza and Rakesh Gandhi and Xufeng Liu and Vishnu Pavan Beeram and Tarek Saad and Igor Bryskin and Xia Chen and Raqib Jones and Bin Wen},
    title =     {{A YANG Data Model for MPLS Base}},
    pagetotal = 16,
    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 contains a specification of the the MPLS base YANG model. The MPLS base YANG module serves as a base framework for configuring and managing an MPLS switching subsystem. It is expected that other MPLS technology YANG models (e.g. MPLS LSP Static, LDP or RSVP-TE models) will augment the MPLS base YANG model.},
}