@article{LiuYan2020,
  author    = {Ruoyu Liu and Huirong Yan},
  title     = {On the unusually large spatial extent of the TeV nebula HESS J1825-137},
  journal   = {Monthly notices of the Royal Astronomical Society},
  series    = {implication from the energy-dependent morphology},
  volume    = {494},
  number    = {2},
  pages     = {2618 -- 2627},
  doi       = {10.1093/mnras/staa911},
  year      = {2020},
}