@article {38, title = {Understanding height-structured competition in forests: is there an R* for light?}, journal = {Proceedings of the Royal Society B: Biological SciencesProceedings of the Royal Society B: Biological Sciences}, volume = {274}, number = {1628}, year = {2007}, pages = {3039-3048}, isbn = {0962-8452}, author = {Adams, Thomas P and Purves, Drew W and Pacala, Stephen W} }