%% You should probably cite rfc6129 instead of this I-D.
@techreport{lundberg-app-tei-xml-09,
    number =    {draft-lundberg-app-tei-xml-09},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-lundberg-app-tei-xml/09/},
    author =    {Laurent Romary and Sigfrid Lundberg},
    title =     {{The 'application/tei+xml' Media Type}},
    pagetotal = 8,
    year =      2010,
    month =     nov,
    day =       12,
    abstract =  {This document defines the 'application/tei+xml' media type for markup languages defined in accordance with the Text Encoding and Interchange guidelines. This document is not an Internet Standards Track specification; it is published for informational purposes.},
}