@article{KoechyWilson2005,
  author    = {Martin K{\"o}chy and Scott D. Wilson},
  title     = {Variation in nitrogen deposition and available soil nitrogen in a forest? Grassland ecotone in Canada},
  url       = {http://dx.doi.org/10.1007/s10980-004-2264-x},
  year      = {2005},
}