%% You should probably cite draft-becker-core-coap-sms-gprs-06 instead of this revision.
@techreport{becker-core-coap-sms-gprs-04,
    number =    {draft-becker-core-coap-sms-gprs-04},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-becker-core-coap-sms-gprs/04/},
    author =    {Markus Becker and Kepeng Li and Thomas Poetsch and Koojana Kuladinithi},
    title =     {{Transport of CoAP over SMS}},
    pagetotal = 14,
    year =      2013,
    month =     aug,
    day =       8,
    abstract =  {Short Message Service (SMS) of mobile cellular networks is frequently used in Machine-To-Machine (M2M) communications, such as for telematic devices. The service offers small packet sizes and high delays just as other typical low-power and lossy networks (LLNs), i.e. 6LoWPANs. The design of the Constrained Application Protocol (CoAP), that took the limitations of LLNs into account, is thus also applicable to other transports. The adaptation of CoAP to SMS transport mechanisms is described in this document.},
}