%% You should probably cite draft-ietf-dnsop-iana-class-type-yang instead of this I-D.
@techreport{lhotka-dnsop-iana-class-type-yang-02,
    number =    {draft-lhotka-dnsop-iana-class-type-yang-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-lhotka-dnsop-iana-class-type-yang/02/},
    author =    {Ladislav Lhotka and Petr Špaček},
    title =     {{YANG Types for DNS Classes and Resource Record Types}},
    pagetotal = 24,
    year =      2019,
    month =     jun,
    day =       27,
    abstract =  {This document contains the initial revision of the YANG module iana- dns-class-rr-type that contains derived types reflecting two IANA registries: DNS CLASSes and Resource Record (RR) TYPEs. These YANG types are intended as a minimum basis for future data modeling work.},
}