%% You should probably cite rfc7913 instead of this I-D.
@techreport{holmberg-dispatch-pani-abnf-01,
    number =    {draft-holmberg-dispatch-pani-abnf-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-holmberg-dispatch-pani-abnf/01/},
    author =    {Christer Holmberg},
    title =     {{P-Access-Network-Info ABNF Update}},
    pagetotal = 4,
    year =      2015,
    month =     oct,
    day =       18,
    abstract =  {This document updates RFC 7315, by modifying the extension-access- info part of the P-Access-Network-Info header field Augmented Backus- Naur Form (ABNF).},
}