%% You should probably cite draft-dijk-core-sleepy-solutions-02 instead of this revision.
@techreport{dijk-core-sleepy-solutions-01,
    number =    {draft-dijk-core-sleepy-solutions-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-dijk-core-sleepy-solutions/01/},
    author =    {Esko Dijk},
    title =     {{Sleepy Devices using CoAP - Possible Solutions}},
    pagetotal = 9,
    year =      2013,
    month =     jun,
    day =       11,
    abstract =  {},
}