%% You should probably cite rfc2243 instead of this I-D.
@techreport{ietf-otp-ext-04,
    number =    {draft-ietf-otp-ext-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-otp-ext/04/},
    author =    {Craig Metz},
    title =     {{OTP Extended Responses}},
    pagetotal = 10,
    year =      1997,
    month =     sep,
    day =       16,
    abstract =  {This document provides a specification for a type of response to an OTP {[}RFC 1938{]} challenge that carries explicit indication of the response's encoding. This document also provides a specification for a response that allows an OTP generator to request that a server re-initialize a sequence and change parameters such as the secret pass phrase. {[}STANDARDS-TRACK{]}},
}