Waterson, P. E., Kendrick, V. L., Ryan, B., Jun, T., & Haslam, R. A. (2016). Probing deeper into the risks of slips, trips and falls for an ageing rail passenger population: applying a systems approach. IET Intelligent Transport Systems, 10(1), 25-31. https://doi.org/10.1049/iet-its.2015.0047