S. B o¨rzs o¨nyi, D. Kossmann, and K. Stocker. “The Skyline Operator.” In Proc. of ICDE, pp. 421-430, 2001.
 T. H. Cormen et al. Introduction to Algorithms. MIT Press and McGraw-Hill, 2001.
 G. Gido´ falvi and T. B. Pedersen. “ST-ACTS: A Spatio-Temporal Activity Simulator.” In Proc. of ACM-GIS, pp. 155-162, 2006.
 G. Gid o´falvi and T. B. Pedersen. “Cab-Sharing: An Effective, Door-to-Door, On-Demand Transportation Service.” In Proc. of ITS Europe, 2007.
 G. Gid o´falvi, T. B. Pedersen, T. Risch, and E. Zeitler. “Highly Scalable Trip Grouping for Large-Scale Collective Transportation Systems.” In Proc. of EDBT, pp. 678-689, 2008.
 S. Hartwig and M. Buchmann. “Empty Seats Travelling: Next Generation Ridesharing and its Potential to Mitigate Traffic- and Emission Problems in the 21st Century.” Nokia Research Center Technical Report: NRC-TR-2007-0003, 2007.
 Online Workshop on Ridesharing Supported by Location Reporting Phones. Proceedings can be obtained by contacting Jim Longbottom at CEETI.org, 2005.
 P. Resnick. “SocioTechnical Support for Ride Sharing”: http://www.si.umich.edu/ ˜presnick/papers/rideshare/draftscenario.pdf (last accessed: 17/08/2008)