@article{WiegandJeltschWard2000,
  author    = {Wiegand, K. and Jeltsch, Florian and Ward, D.},
  title     = {Do spatial effects play a role in the spatial distribution of desert dwelling Acacias?},
  year      = {2000},
  language  = {en}
}
@article{WiegandWardThulkeetal.2000,
  author    = {Wiegand, K. and Ward, D. and Thulke, Hans-Hermann and Jeltsch, Florian},
  title     = {From snap-shot information to long-term population dynamics of Acacias by a simulation model},
  year      = {2000},
  language  = {en}
}
@article{WiegandSchmidtJeltschetal.2000,
  author    = {Wiegand, K. and Schmidt, H. and Jeltsch, Florian and Ward, D.},
  title     = {Linking a spatially-explicit model of acacias to GIS and remotely-sensed data},
  year      = {2000},
  language  = {en}
}