@article {Hijmans2005IJC,
	title = {{Very high resolution interpolated climate surfaces for global land areas}},
	journal = {International Journal of Climatology},
	volume = {25},
	year = {2005},
	pages = {1965-1978},
	author = {Hijmans, R.J. and Cameron, S.E. and Parra, J.L. and Jones, P.G. and Jarvis, A.}
}