@article {2030,
	title = {Quantifying and Mapping the Human Appropriation of Net Primary Production in Earth{\textquoteright}s Terrestrial Ecosystems},
	journal = {Proceedings of the National Academy of Sciences},
	volume = {104},
	year = {2007},
	pages = {12942-12947},
	author = {Haberl, Helmut and Erb, Karl-Heinz and Krausmann, Fridolin and Gaube, Veronika and Bondeau, Alberte and Plutzar, Christoph and Gingrich, Simone and Lucht, Wolfgang and Fischer-Kowalski, Marina}
}
