@article {King89e,
	title = {A Seemingly Unrelated Poisson Regression Model},
	journal = {Sociological Methods and Research},
	volume = {17},
	year = {1989},
	month = {February},
	pages = {235{\textendash}255},
	abstract = {This article introduces a new estimator for the analysis of two contemporaneously correlated endogenous event count variables. This seemingly unrelated Poisson regression model (SUPREME) estimator combines the efficiencies created by single equation Poisson regression model estimators and insights from "seemingly unrelated" linear regression models.},
	author = {Gary King}
}
