@article{44781,
  author = {Martin Kennedy and Lars Hedin and Louis Derry},
  title = {Decoupling of unpolluted temperate forests from rock nutrient sources revealed by natural 87Sr/86Sr and 84Sr tracer addition},
  year = {2002},
  journal = {Proceedings of the National Academy of Sciences},
  volume = {99},
  number = {15},
  pages = {9639{\textendash}9644},
  url = {http://www.pnas.org/content/99/15/9639.short},
  language = {eng},
}