Fifty Years of Urban Modeling: Macro-Statics to Micro-Dynamics.- Complexity: The Integrating Framework for Models of Urban and Regional Systems.- Ontogeny and Ontology in Complex Systems Modeling.- A Model for Asystematic Mobility in Urban Space.- Preliminary Results of a Multi-Agent Traffic Simulation for Berlin.- Hybrid Geographical Models of Urban Spatial Structure and Behavior.- Two Complexities and a Few Models.- Cities as Evolutionary Systems...