@article{JanSch17, title = {Detecting Confounding in Multivariate Linear Models via Spectral Analysis}, author = {Janzing, D. and Sch{\"o}lkopf, B.}, journal = {Journal of Causal Inference}, volume = {6}, number = {1}, pages = {article no. 20170013}, year = {2017}, doi = {10.1515/jci-2017-0013} }