@conference{Zhangetal17,
  title = {Causal Discovery from Nonstationary/Heterogeneous Data: Skeleton Estimation and Orientation Determination},
  booktitle = {Proceedings of the Twenty-Sixth International Joint Conference on Artificial Intelligence (IJCAI)},
  pages = {1347--1353},
  editors = {Carles Sierra},
  month = aug,
  year = {2017},
  author = {Zhang, K. and Huang, B. and Zhang, J. and Glymour, C. and Sch{\"o}lkopf, B.},
  doi = {10.24963/ijcai.2017/187},
  month_numeric = {8}
}