@article{articlec37fb246,
title   = {Nitrogen stable isotopic composition of leaves and soil: tropical versus temperate forests},
author = {Martinelli, Luiz Antonio and Piccolo, Marisa de Cássia and Townsend, A. R. and Vitousek, Peter M. and Cuevas, E. and McDowell, W. and Robertson, G. P. and Santos, O. C. and Treseler, K.},
year = {1999},
doi = {10.1007/bf01007573},
journal   = {Biogeochemistry}
}