%% You should probably cite draft-ietf-ippm-twamp-yang instead of this I-D.
@techreport{cmzrjp-ippm-twamp-yang-02,
    number =    {draft-cmzrjp-ippm-twamp-yang-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-cmzrjp-ippm-twamp-yang/02/},
    author =    {Ruth Civil and Al Morton and Lianshu Zheng and Reshad Rahman and Mahesh Jethanandani and Kostas Pentikousis},
    title =     {{Two-Way Active Measurement Protocol (TWAMP) Data Model}},
    pagetotal = 56,
    year =      2015,
    month =     oct,
    day =       19,
    abstract =  {This document specifies a data model for client and server implementations of the Two-Way Active Measurement Protocol (TWAMP). We define the TWAMP data model through Unified Modeling Language (UML) class diagrams and formally specify it using YANG.},
}