%% You should probably cite rfc7485 instead of this I-D.
@techreport{ietf-weirds-object-inventory-00,
    number =    {draft-ietf-weirds-object-inventory-00},
    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-weirds-object-inventory/00/},
    author =    {Linlin Zhou and Ning Kong and Sean Shen},
    title =     {{Domain Name Registration Data Access Protocol Object Inventory Analysis}},
    pagetotal = 18,
    year =      2013,
    month =     apr,
    day =       15,
    abstract =  {WHOIS output elements from 124 TLDs were collected and analyzed. This document describes the statistical analysis process and result of WHOIS information. The purpose of this document is to build an object inventory to facilitate discussions of domain name data objects in WHOIS response.},
}