1. Demand Responsive Transport Services: Towards the Flexible Mobility Agency;Ambrosino,2004
2. Demand-Responsive Transit Shuttles: Who Will Use Them?;Anspacher,2004
3. Activity-based approaches to travel analysis: conceptual frameworks, models, and research problems;Axhausen;Transp. Rev.,1992
4. Large scale demand responsive transit systems-a local suburban transport solution for the next millennium;Bakker,1999