%% You should probably cite draft-ietf-core-yang-library instead of this I-D.
@techreport{veillette-core-yang-library-03,
    number =    {draft-veillette-core-yang-library-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-veillette-core-yang-library/03/},
    author =    {Michel Veillette},
    title =     {{Constrained YANG Module Library}},
    pagetotal = 15,
    year =      2018,
    month =     sep,
    day =       21,
    abstract =  {This document describes a constrained version of the YANG library that provides information about the YANG modules, datastores, and datastore schemas used by a constrained network management server (e.g., a CoMI server).},
}