%% You should probably cite rfc6880 instead of this I-D.
@techreport{ietf-krb-wg-kdc-model-16,
    number =    {draft-ietf-krb-wg-kdc-model-16},
    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-krb-wg-kdc-model/16/},
    author =    {Leif Johansson},
    title =     {{An Information Model for Kerberos Version 5}},
    pagetotal = 14,
    year =      2013,
    month =     jan,
    day =       14,
    abstract =  {This document describes an information model for Kerberos version 5 from the point of view of an administrative service. There is no standard for administrating a Kerberos 5 Key Distribution Center (KDC). This document describes the services exposed by an administrative interface to a KDC.},
}