@article{JeltschTewsBroseetal.2004,
  author    = {Florian Jeltsch and J{\"o}rg Tews and Ulrich Brose and Volker Grimm and Katja Tielb{\"o}rger and Matthias Wichmann and Monika Schwager},
  title     = {Animal species diversity driven by habitat heterogeneity/diversity : the importance of keystone structures},
  year      = {2004},
}