Malhi, Y.; Baker, T. R.; Phillips, O. L.; Almeida, S.; Alvarez, E.; Arroyo, L. et al. 2004. The Above-ground Wood Productivity and Net Primary Productivity of 100 Neotropical Forest. Global Change Biology. Volume 10 Issue 5 Page 563- May 2004.
http://www.rainfor.org/upload/publication-store/itm_74/Malhi%20Y%20et%20al%20GCB%202004.pdf