Book Section

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

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