%% You should probably cite rfc7240 instead of this I-D. @techreport{snell-http-prefer-18, number = {draft-snell-http-prefer-18}, 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/18/}, author = {James M. Snell}, title = {{Prefer Header for HTTP}}, pagetotal = 17, year = 2013, month = jan, day = 7, abstract = {This specification defines an HTTP header field that can be used by a client to request that certain behaviors be employed by a server while processing a request.}, }