1. Chen C & Mokhtarian PL (2000) Modeling individuals’ travel time and money expenditures. Research Report UCD-ITS-RR-00-22, Institute of Transportation Studies, University of California, Davis, March. Available at http://www.its.ucdavis.edu/publications/2000/RR-00-22.pdf
2. Chen C & Mokhtarian PL (2005) An exploratory study using an AIDS model for tradeoffs between time allocations to maintenance activities/travel and discretionary activities/travel. Research Report UCD-ITS-RR-05-09, Institute of Transportation Studies, University of California, Davis, June. Available at http://www.its.ucdavis.edu/publications/2005/RR-05-09.pdf
3. A Theory of the Economics of Time