%% You should probably cite draft-ietf-netmod-yang-data-ext instead of this I-D.
@techreport{bierman-netmod-yang-data-ext-01,
    number =    {draft-bierman-netmod-yang-data-ext-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-bierman-netmod-yang-data-ext/01/},
    author =    {Andy Bierman and Martin Björklund and Kent Watsen},
    title =     {{YANG Data Extensions}},
    pagetotal = 10,
    year =      2017,
    month =     oct,
    day =       30,
    abstract =  {This document describes YANG mechanisms for defining abstract data structures with YANG. It is intended to replace and extend the "yang-data" extension statement defined in RFC 8040.},
}