@article{Acharya2016,
author = {Acharya, A. and Blackwell, M. and Sen, M.},
title= {Explaining causal findings without bias: detecting and assessing direct effects},
year = {2016},
doi = {10.1017/S0003055416000216},
volume = {110},
number = {3},
pages = {512--529},
}