@article{JMLR:v22:19-1018,
  author  = {Di Xiao and Yuan Ke and Runze Li},
  title   = {Homogeneity Structure Learning in Large-scale Panel Data with Heavy-tailed Errors},
  journal = {Journal of Machine Learning Research},
  year    = {2021},
  volume  = {22},
  number  = {13},
  pages   = {1--42},
  url     = {http://jmlr.org/papers/v22/19-1018.html}
}