@article{publication-2074,
	author={Winkelmann, Rainer and Zimmermann, Klaus F},
	doi={10.1016/0165-1765(91)90122-2},
	issn={0165-1765},
	journal={Economics Letters},
	number=2,
	pages={139-143},
	publisher={Elsevier},
	title={A new approach for modeling economic count data},
	volume=37,
	year=1991,
}