%% You should probably cite draft-ietf-httpbis-cache-header instead of this I-D. @techreport{nottingham-cache-header-00, number = {draft-nottingham-cache-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-nottingham-cache-header/00/}, author = {Mark Nottingham}, title = {{The Cache HTTP Response Header}}, pagetotal = 7, year = 2018, month = sep, day = 6, abstract = {To aid debugging, HTTP caches often append headers to a response detailing how they handled the request. This specification codifies that practice and updates it for HTTP's current caching model.}, }