@article{BartholdStallardElsenbeer2008,
  author    = {Frauke Katrin Barthold and Robert F. Stallard and Helmut Elsenbeer},
  title     = {Soil nutrient-landscape relationships in a lowland tropical rainforest in Panama},
  doi       = {10.1016/j.foreco.2007.09.089},
  url       = {http://si-pddr.si.edu/dspace/bitstream/10088/7790/1/Barthold_soil_nutrient_landscape_r.pdf},
  year      = {2008},
}