%% You should probably cite draft-xibassnez-i2nsf-capability instead of this I-D.
@techreport{xia-i2nsf-capability-interface-im-00,
    number =    {draft-xia-i2nsf-capability-interface-im-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-xia-i2nsf-capability-interface-im/00/},
    author =    {Liang Xia and Dacheng Zhang},
    title =     {{Information Model of Interface to Network Security Functions Capability Interface}},
    pagetotal = 12,
    year =      2015,
    month =     jan,
    day =       29,
    abstract =  {This draft is focused on the NBI of NSFs and proposes an information model for configuring various kinds NSF security functions. The Yang structure and use examples are also presented to clarify how to use the information model.},
}