%% You should probably cite rfc4708 instead of this I-D.
@techreport{miller-media-type-cellml-05,
    number =    {draft-miller-media-type-cellml-05},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-miller-media-type-cellml/05/},
    author =    {Andrew Miller},
    title =     {{CellML Media Type}},
    pagetotal = 7,
    year =      2006,
    month =     jul,
    day =       12,
    abstract =  {This document standardises a new media type -- application/cellml+xml -- for use in exchanging mathematical models represented in a CellML Umbrella 1.0 compliant markup language. This memo provides information for the Internet community.},
}