%% You should probably cite draft-ietf-netmod-rfc6991-bis-15 instead of this revision.
@techreport{ietf-netmod-rfc6991-bis-04,
    number =    {draft-ietf-netmod-rfc6991-bis-04},
    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-netmod-rfc6991-bis/04/},
    author =    {Jürgen Schönwälder},
    title =     {{Common YANG Data Types}},
    pagetotal = 48,
    year =      2020,
    month =     jul,
    day =       6,
    abstract =  {This document introduces a collection of common data types to be used with the YANG data modeling language. This document obsoletes RFC 6991.},
}