%% You should probably cite rfc4279 instead of this I-D.
@techreport{ietf-tls-psk-09,
    number =    {draft-ietf-tls-psk-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-tls-psk/09/},
    author =    {Hannes Tschofenig and Pasi Eronen},
    title =     {{Pre-Shared Key Ciphersuites for Transport Layer Security (TLS)}},
    pagetotal = 15,
    year =      2005,
    month =     jun,
    day =       22,
    abstract =  {This document specifies three sets of new ciphersuites for the Transport Layer Security (TLS) protocol to support authentication based on pre-shared keys (PSKs). These pre-shared keys are symmetric keys, shared in advance among the communicating parties. The first set of ciphersuites uses only symmetric key operations for authentication. The second set uses a Diffie-Hellman exchange authenticated with a pre-shared key, and the third set combines public key authentication of the server with pre-shared key authentication of the client. {[}STANDARDS-TRACK{]}},
}