H. Haberl, K. H. Erb, F. Krausmann, V. Gaube, A. Bondeau, C. Plutzar, S. Gingrich, W. Lucht, M. Fischer-Kowalski,
Quantifying and mapping the human appropriation of net primary production in earth's terrestrial ecosystems Proceedings of the National Academy of Sciences of the United States of America. ,vol. 104, pp. 12942- 12947 ,(2007) ,
10.1073/PNAS.0704243104