1. NCHRP Project 70–01 (2005) Private-sector provision of congestion data. Probe-based traffic monitoring. State-of-the-practice report . University of Virginia Center for Transportation Studies. Virginia Transportation Research Council, November 21
2. Ben-Akiva M, Bierlaire M, Koutsopoulos HN, Mishalani R (1998) DynaMIT: a simulation-based system for traffic prediction. Proceedings of the DACCORD Short-term forecasting workshop (DACCORD) February, 1998
3. Logi F, Ullrich M, Keller H (2001) Traffic estimation in Munich: practical problems and pragmatic solutions. 2001 IEEE Intelligent Transportation Systems Conference Proceedings—Oakland (CA), USA—August 25-29
4. Travel Time Estimation Using Cell Phones (TTECP) for Highways and Roadways. Department of Electrical and Computer Engineering Florida International University
5. Performance and Limitations of Cellular-Based Traffic Monitoring Systems. CellINT Traffic Solutions (2007) Ohio Transport Engineering Conference