1. Activity-based Approaches to Travel Analysis: Conceptual Frameworks, Models and Research Problems;Axhausen,1991
2. A conceptual framework of individual activity program generation;Bhat;Transpn Res. A,1993
3. Classification and Regression Trees;Breiman,1984
4. Census of Population and Housing, 1990,1992
5. Census of Population and Housing, 1990,1992