%% You should probably cite draft-li-mpls-seamless-mpls-mbh instead of this I-D.
@techreport{li-mpls-seamless-mpls-mbb-01,
    number =    {draft-li-mpls-seamless-mpls-mbb-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-li-mpls-seamless-mpls-mbb/01/},
    author =    {Zhenbin Li and Lei Li and Manuel Julian Lopez Morillo and Tianle Yang},
    title =     {{Seamless MPLS for Mobile Backhaul}},
    pagetotal = 22,
    year =      2014,
    month =     feb,
    day =       13,
    abstract =  {This document introduces the framework of Seamless MPLS to integrate the mobile backhaul network with the core network. New requirements of Seamless MPLS for mobile backhaul networks are defined and corresponding solutions are proposed.},
}