%% You should probably cite draft-ietf-rtgwg-yang-rip instead of this I-D.
@techreport{liu-rtgwg-yang-rip-01,
    number =    {draft-liu-rtgwg-yang-rip-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-liu-rtgwg-yang-rip/01/},
    author =    {Xufeng Liu and Prateek Sarda and Vikram Choudhary},
    title =     {{A YANG Data Model for Routing Information Protocol (RIP)}},
    pagetotal = 30,
    year =      2015,
    month =     jul,
    day =       2,
    abstract =  {This document describes a data model for Routing Information Protocol (RIP). Both RIP version 2 and RIPng are covered.},
}