@article {ChefaouiLobo2008EM,
	title = {{Assessing the effects of pseudo-absences on predictive distribution model performance}},
	journal = {Ecological Modelling},
	volume = {210},
	year = {2008},
	pages = {478-486},
	author = {Chefaoui, R.~M. and Lobo, J.~M.}
}