%% You should probably cite rfc2631 instead of this I-D.
@techreport{ietf-smime-x942-07,
    number =    {draft-ietf-smime-x942-07},
    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-smime-x942/07/},
    author =    {Eric Rescorla},
    title =     {{Diffie-Hellman Key Agreement Method}},
    pagetotal = 13,
    year =      1999,
    month =     mar,
    day =       30,
    abstract =  {This document standardizes one particular Diffie-Hellman variant, based on the ANSI X9.42 draft, developed by the ANSI X9F1 working group. {[}STANDARDS-TRACK{]}},
}