%% You should probably cite draft-ietf-uta-tls-bcp instead of this I-D.
@techreport{sheffer-tls-bcp-01,
    number =    {draft-sheffer-tls-bcp-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-sheffer-tls-bcp/01/},
    author =    {Yaron Sheffer and Ralph Holz},
    title =     {{Recommendations for Secure Use of TLS and DTLS}},
    pagetotal = 12,
    year =      2013,
    month =     sep,
    day =       20,
    abstract =  {Over the last few years there have been several serious attacks on TLS, including attacks on its most commonly used ciphers and modes of operation. This document offers recommendations on securely using the TLS and DTLS protocols, given existing standards and implementations.},
}