%% You should probably cite rfc1510 instead of this I-D.
@techreport{ietf-cat-kerberos-02,
    number =    {draft-ietf-cat-kerberos-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-ietf-cat-kerberos/02/},
    author =    {Dr. Clifford Neuman and Theodore Ts'o},
    title =     {{The Kerberos Network Authentication Service (V5)}},
    pagetotal = 112,
    year =      1993,
    month =     apr,
    day =       21,
    abstract =  {This document gives an overview and specification of Version 5 of the protocol for the Kerberos network authentication system. {[}STANDARDS-TRACK{]}},
}