1. Bureau of Transportation Statistics National Transportation Library, http://nlt.bts.gov .
2. National Cooperative Highway Research Program: Travel Demand Forecasting: Parameters and Techniques. Transportation Research Board. Washington, D.C. (2012).
3. L. Yao, H. Guan and H. Yan: Trip generation model based on destination attractiveness. Tsinghua Science and Technology 13, 632–635 (2008).
4. C. Liu and D. Hu: A forecasting method of trip generation based on land classification combined with OD matrix estimation. In: 7th Advanced Forum on Transportation of China (AFTC 2011), pp. 1–4. Beijing (2011).
5. Wen Huiying and Zhang Wenbiao: A new trip distribution model based on potential theory. In: International Conference on Mechanic Automation and Control Engineering (MACE), pp. 717–720. Wuhan, China (2010).