%% You should probably cite draft-besleaga-sustainability-wellknown instead of this I-D.
@techreport{besleaga-green-sustainability-header-00,
    number =    {draft-besleaga-green-sustainability-header-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-besleaga-green-sustainability-header/00/},
    author =    {Andrei Nicolae Besleaga},
    title =     {{The Sustainability HTTP Response Header Field}},
    pagetotal = 6,
    year =      2026,
    month =     feb,
    day =       27,
    abstract =  {This document defines the Sustainability HTTP response header field. This field provides a mechanism for servers to report the environmental impact and carbon footprint metrics associated with the processing and delivery of an HTTP request. By defining this header as a Structured Field, this specification ensures high parsing reliability and compatibility with HTTP/2 and HTTP/3 header compression mechanisms, thereby mitigating the secondary environmental costs of transmitting the metadata itself.},
}