%% You should probably cite draft-gong-spring-hierarchical-slice-solution instead of this I-D.
@techreport{gong-teas-hierarchical-slice-solution-00,
    number =    {draft-gong-teas-hierarchical-slice-solution-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-gong-teas-hierarchical-slice-solution/00/},
    author =    {Liyan Gong and Weiqiang Cheng and Changwang Lin and Mengxiao Chen and Jie Dong and Ran Chen and Yanrong Liang},
    title =     {{Segment Routing based Solution for Hierarchical IETF Network Slices}},
    pagetotal = 14,
    year =      2022,
    month =     jul,
    day =       10,
    abstract =  {This document describes a Segment Routing based solution for two- level hierarchical IETF network slices. Level-1 network slice is realized by associating Flex-Algo with dedicated sub-interfaces, and level-2 network slice is realized by using SR Policy with additional NRP-ID on data plane.},
}