@article {carrillo2010pseudo,
	title = {The pseudo-GEE approach to the analysis of longitudinal surveys},
	journal = {Canadian Journal of Statistics},
	volume = {38},
	number = {4},
	year = {2010},
	pages = {540{\textendash}554},
	publisher = {Wiley Online Library},
	author = {Carrillo, Iv{\'a}n A and Chen, Jiahua and Wu, Changbao}
}
