@article{SchiffersSchurrTielboergeretal.2008,
  author    = {Schiffers, Katja and Schurr, Frank Martin and Tielb{\"o}rger, Katja and Urbach, Carsten and Moloney, Kirk A. and Jeltsch, Florian},
  title     = {Dealing with virtual aggregation : a new index for analysing heterogeneous point patterns},
  issn      = {0906-7590},
  doi       = {10.1111/j.0906-7590.2008.05374.x},
  year      = {2008},
  language  = {en}
}