%% You should probably cite rfc4365 instead of this I-D.
@techreport{ietf-l3vpn-as2547-07,
    number =    {draft-ietf-l3vpn-as2547-07},
    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-l3vpn-as2547/07/},
    author =    {Eric C. Rosen},
    title =     {{Applicability Statement for BGP/MPLS IP Virtual Private Networks (VPNs)}},
    pagetotal = 32,
    year =      2004,
    month =     oct,
    day =       5,
    abstract =  {This document provides an Applicability Statement for the Virtual Private Network (VPN) solution described in RFC 4364 and other documents listed in the References section. This memo provides information for the Internet community.},
}