@article{peterson_photosynthesis-leaf_1999,
	title = {The photosynthesis-leaf nitrogen relationship at ambient and elevated atmospheric carbon dioxidea meta-anaysis.},
	volume = {5},
	number = {331-346},
	journal = {Global Change Biology},
	author = {Peterson, A.G. and Luo, Y and Field, CB and Reich, P. B. and Curtis, P.S. and Griffin, K.L. and Gunderson, C.A. and Nor, R.J.},
	year = {1999},
	keywords = {CDR}
}