@article{44861,
  author = {Nina Wurzburger and Jean Philippe Bellenger and Anne Kraepiel and Lars Hedin},
  title = {Molybdenum and phosphorus interact to constrain asymbiotic nitrogen fixation in tropical forests},
  year = {2012},
  url = {http://dx.plos.org/10.1371/journal.pone.0033710},
  language = {eng},
}