%% You should probably cite rfc7554 instead of this I-D.
@techreport{ietf-6tisch-tsch-06,
    number =    {draft-ietf-6tisch-tsch-06},
    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-6tisch-tsch/06/},
    author =    {Thomas Watteyne and Maria Rita Palattella and Luigi Alfredo Grieco},
    title =     {{Using IEEE 802.15.4e Time-Slotted Channel Hopping (TSCH) in the Internet of Things (IoT): Problem Statement}},
    pagetotal = 23,
    year =      2015,
    month =     mar,
    day =       9,
    abstract =  {This document describes the environment, problem statement, and goals for using the Time-Slotted Channel Hopping (TSCH) Medium Access Control (MAC) protocol of IEEE 802.14.4e in the context of Low-Power and Lossy Networks (LLNs). The set of goals enumerated in this document form an initial set only.},
}