%% You should probably cite draft-ietf-mpls-residence-time instead of this I-D.
@techreport{mirsky-mpls-residence-time-01,
    number =    {draft-mirsky-mpls-residence-time-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-mirsky-mpls-residence-time/01/},
    author =    {Greg Mirsky and John Drake and Stewart Bryant and Sasha Vainshtein},
    title =     {{Residence Time Measurment in MPLS network}},
    pagetotal = 7,
    year =      2014,
    month =     apr,
    day =       21,
    abstract =  {This document specifies G-ACh based Residence Time Measurement and how it can be used by time synchronization protocols being transported over MPLS domain.},
}