%% You should probably cite rfc8075 instead of this I-D.
@techreport{ietf-core-http-mapping-09,
    number =    {draft-ietf-core-http-mapping-09},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-core-http-mapping/09/},
    author =    {Angelo P. Castellani and Salvatore Loreto and Akbar Rahman and Thomas Fossati and Esko Dijk},
    title =     {{Guidelines for HTTP-CoAP Mapping Implementations}},
    pagetotal = 35,
    year =      2016,
    month =     apr,
    day =       6,
    abstract =  {This document provides reference information for implementing a proxy that performs translation between the HTTP protocol and the CoAP protocol, focusing on the reverse proxy case. It describes how a HTTP request is mapped to a CoAP request and how a CoAP response is mapped back to a HTTP response. Furthermore, it defines a template for URI mapping and provides a set of guidelines for HTTP to CoAP protocol translation and related proxy implementations.},
}