Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsCompetition for Territory: The Levins Model for Two Specieshttp://demonstrations.wolfram.com/CompetitionForTerritoryTheLevinsModelForTwoSpecies/]]>http://demonstrations.wolfram.com/CompetitionForTerritoryTheLevinsModelForTwoSpecies/