Kerridge, Jon, Armitage, Alistair, Binnie, David, Lei, Lucy and Sumpter, Neil (2005) Using low cost infrared detectors to monitor movement of pedestrians: initial findings. Transportation Research Record, 1878 (1). pp. 11-18. ISSN 0361 1981

Kerridge, Jon, Kukla, Robert, Willis, Alexandra, Armitage, Alistair, Binnie, David and Lei, Lucy (2005) A comparison of video and infrared based tracking of pedestrian movements. In: Traffic and granular flow 03. Traffic and granular flow . Springer, London & Berlin, pp. 383-392. ISBN 3540258140

Kerridge, Jon, Armitage, Alistair, Binnie, David, Lei, Lucy and Sumpter, Neil (2004) Monitoring the movement of pedestrians using low-cost infrared detectors: initial findings. Transportation Research Record, 1878. pp. 11-18. ISSN 0361-1981

Armitage, Alistair, Binnie, David, Kerridge, Jon and Lei, Lucy (2003) Measuring pedestrian trajectories using a pyroelectric differential infrared detector. In: Sensors and their Applications XII. Sensors and their Applications . Institute of Physics Publishing, pp. 143-149. ISBN 0750309784

Armitage, Alistair, Binnie, David, Kerridge, Jon and Lei, Lucy (2003) Measuring pedestrian trajectories with low cost infrared detectors: Preliminary results. In: Pedestrian and Evacuation Dynamics: 2nd International Conference held at the Old Naval College, University of Greenwich, London, 20-22 August 2003. CMS Press, University of Greenwich, London, pp. 101-110. ISBN 1-904521-08-8 and 9781904521082

Kerridge, Jon, Armitage, Alistair, Binnie, David, Lei, Lucy and Sumpter, Neil (2003) Using low-cost infrared detectors to monitor movement of pedestrians. In: Sensors and their applications XII. Sensors and their applications . IOP Press, pp. 143-149. ISBN 0750309784