%% You should probably cite rfc7808 instead of this I-D.
@techreport{ietf-tzdist-service-11,
    number =    {draft-ietf-tzdist-service-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-tzdist-service/11/},
    author =    {Michael Douglass and Cyrus Daboo},
    title =     {{Time Zone Data Distribution Service}},
    pagetotal = 56,
    year =      2015,
    month =     jul,
    day =       23,
    abstract =  {This document defines a time zone data distribution service that allows reliable, secure, and fast delivery of time zone data and leap-second rules to client systems such as calendaring and scheduling applications or operating systems.},
}