@article {Zaniewski2002EM,
	title = {{Predicting species spatial distributions using presence-only data: a case study of native New Zealand ferns}},
	journal = {Ecological modelling},
	volume = {157},
	number = {2-3},
	year = {2002},
	pages = {261-280},
	author = {Zaniewski, A.~E. and Lehmann, A. and Overton, J.~McC.}
}