%% You should probably cite rfc5364 instead of this I-D.
@techreport{ietf-sipping-capacity-attribute-07,
    number =    {draft-ietf-sipping-capacity-attribute-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-sipping-capacity-attribute/07/},
    author =    {Miguel Angel García and Gonzalo Camarillo},
    title =     {{Extensible Markup Language (XML) Format Extension for Representing Copy Control Attributes in Resource Lists}},
    pagetotal = 17,
    year =      2008,
    month =     aug,
    day =       1,
    abstract =  {In certain types of multimedia communications, a Session Initiation Protocol (SIP) request is distributed to a group of SIP User Agents (UAs). The sender sends a single SIP request to a server which further distributes the request to the group. This SIP request contains a list of Uniform Resource Identifiers (URIs), which identify the recipients of the SIP request. This URI list is expressed as a resource list XML document. This specification defines an XML extension to the XML resource list format that allows the sender of the request to qualify a recipient with a copy control level similar to the copy control level of existing email systems. {[}STANDARDS-TRACK{]}},
}