%% You should probably cite rfc8120 instead of this I-D.
@techreport{ietf-httpauth-mutual-08,
    number =    {draft-ietf-httpauth-mutual-08},
    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-httpauth-mutual/08/},
    author =    {Yutaka Oiwa and Hajime Watanabe and Hiromitsu Takagi and Kaoru Maeda and Tatsuya Hayashi and Yuichi Ioku},
    title =     {{Mutual Authentication Protocol for HTTP}},
    pagetotal = 54,
    year =      2016,
    month =     jul,
    day =       7,
    abstract =  {This document specifies a mutual authentication scheme for the Hypertext Transfer Protocol (HTTP). This scheme provides true mutual authentication between an HTTP client and an HTTP server using password-based authentication. Unlike the Basic and Digest authentication schemes, the Mutual authentication scheme specified in this document assures the user that the server truly knows the user's encrypted password.},
}