%% You should probably cite draft-ryoogray-mpls-tp-psc-itu instead of this I-D.
@techreport{dj-mpls-tp-exer-psc-02,
    number =    {draft-dj-mpls-tp-exer-psc-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-dj-mpls-tp-exer-psc/02/},
    author =    {Alessandro D'Alessandro and Jeong-dong Ryoo and Huub van Helvoort},
    title =     {{Supporting the Exercise command for PSC linear protection protocol}},
    pagetotal = 10,
    year =      2013,
    month =     sep,
    day =       25,
    abstract =  {This draft indicates how IETF RFC6378 could be modified to address the Exercise function.},
}