@article {240181,
	title = {Causal Inference in Panel Data with Application to Estimating Race-of-Interviewer Effects in the General Social Survey},
	journal = {Sociological Methods \& Research},
	volume = {46},
	number = {1},
	year = {2017},
	pages = {68-102},
	author = {An, Weihua and Christopher Winship}
}
