%% You should probably cite draft-ietf-httpbis-client-hints instead of this I-D.
@techreport{grigorik-http-client-hints-03,
    number =    {draft-grigorik-http-client-hints-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-grigorik-http-client-hints/03/},
    author =    {Ilya Grigorik},
    title =     {{HTTP Client Hints}},
    pagetotal = 11,
    year =      2015,
    month =     aug,
    day =       24,
    abstract =  {An increasing diversity of Web-connected devices and software capabilities has created a need to deliver optimized content for each device. This specification defines a set of HTTP request header fields, colloquially known as Client Hints, to address this. They are intended to be used as input to proactive content negotiation; just as the Accept header allows clients to indicate what formats they prefer, Client Hints allow clients to indicate a list of device and agent specific preferences.},
}