%% You should probably cite rfc7240 instead of this I-D. @techreport{snell-http-prefer-12, number = {draft-snell-http-prefer-12}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-snell-http-prefer/12/}, author = {James M. Snell}, title = {{Prefer Header for HTTP}}, pagetotal = 14, year = 2012, month = feb, day = 8, abstract = {This specification defines an HTTP header field that can be used by a client to request that certain behaviors be implemented by a server while processing a request.}, }