Thomas, C. J., Tallon, A. R., Bromley, R. D., Bromley, R. D. F., Tallon, A., & Thomas, C. J. (2003). Disaggregating the space-time layers of city-centre activities and their users. Environment and Planning A, 35(10), 1831-1851. https://doi.org/10.1068/a35294