@article {wu_longitudinal2009,
	title = {A Longitudinal Study of Children{\textquoteright}s Aggressive Behaviors and Their Relationships with Potential Predictors},
	journal = {Canadian Journal of Statistics},
	volume = {37},
	year = {2009},
	pages = {435{\textendash}452},
	author = {Wu, L and Liu, W and Liu, J}
}
