1. Vehicle reidentification and travel time measurement on congested freeways;Coifman;Transportation Research Part A: Policy and Practice,2002
2. Fletcher, R., 1971. A Modified Marquardt Subroutine for Nonlinear Least Squares. Rpt. AERE-R 6799, Harwell. Matlab Parallel Computing Toolbox. Mathworks, Inc.
3. Valuing travel time variability: characteristics of the travel time distribution on an urban road;Fosgerau;Transportation Research Part C: Emerging Technologies,2012
4. Grynbaum, M.M., 2010. Gridlock May Not Be Constant, but Slow Going Is Here to Stay. New York Times. Retrieved July 31, 2012. .
5. Modeling of travel time variations on urban links in London;Hasan;Transportation Research Record: Journal of the Transportation Research Board,2011