%% You should probably cite rfc7879 instead of this I-D.
@techreport{ietf-straw-b2bua-dtls-srtp-11,
    number =    {draft-ietf-straw-b2bua-dtls-srtp-11},
    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-straw-b2bua-dtls-srtp/11/},
    author =    {Ram R and Tirumaleswar Reddy.K and Gonzalo Salgueiro and Victor Pascual and Parthasarathi Ravindran},
    title =     {{DTLS-SRTP Handling in Session Initiation Protocol (SIP) Back-to-Back User Agents (B2BUAs)}},
    pagetotal = 13,
    year =      2016,
    month =     mar,
    day =       8,
    abstract =  {Session Initiation Protocol (SIP) Back-to-Back User Agents (B2BUA) exist on the signaling and media paths between the endpoints. This document describes the behavior of B2BUAs when Secure Real-time Transport (SRTP) security context is set up with the Datagram Transport Layer Security (DTLS) protocol.},
}