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