1. Lane-by-lane modelling of unequal lane use and flares at roundabouts and signalised intersections: the SIDRA solution;Akçelik;Traffic Engineering and Control,1997
2. Akçelik, R., 2003. A roundabout case study comparing capacity estimates from alternative analytical models. In: the 2nd Urban Street Symposium, Anaheim, California, USA, July 2003.
3. Akçelik, R., 2006. Operating cost, fuel consumption and pollutant emission savings at a roundabout with metering signals. In: ARRB 22nd Conference, Canberra, Australia. .
4. Dynamic vehicular delay comparison between a police-controlled roundabout and a traffic signal;Al-Madani;Transportation Research Part A: Policy and Practice,2003
5. Development of a delay model for roundabouts in Jordan;Al-Omari;Journal of Transportation Engineering,2003