@article {41912,
	title = {Comparison of the population viability analysis packages GAPPS, INMAT, RAMAS and VORTEX for the whooping crane (Grus americana)},
	volume = {2},
	year = {1999},
	pages = {23-31},
	publisher = {Animal Conservation},
	author = {Brook, Barry W. and Cannon, John R. and Lacy, Robert C. and Mirane, Claire and Frankham, Richard}
}
