%% You should probably cite draft-ietf-pim-yang instead of this I-D.
@techreport{mcallister-pim-yang-01,
    number =    {draft-mcallister-pim-yang-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-mcallister-pim-yang/01/},
    author =    {Xufeng Liu and Pete McAllister and Anish Peter},
    title =     {{A YANG data model for Protocol-Independent Multicast (PIM)}},
    pagetotal = 62,
    year =      2015,
    month =     oct,
    day =       19,
    abstract =  {This document defines a YANG data model that can be used to configure Protocol Independent Multicast (PIM) devices.},
}