Growth and Allocation of Resources in Economics: The Agent-Based   Approach
  Some agent-based models for growth and allocation of resources are described. The first class considered consists of conservative models, where the number of agents and the size of resources are constant during time evolution. The second class is made up of multiplicative noise models and some of their extensions to continuous-time. 
Enrico Scalas, Mauro Gallegati, Eric Guerci, David Mas, and Alessandra   Tedeschi