1. Aberkane, T., Harvey, M., Webb, M., 2004. Annual ambient air quality monitoring report 2003. U04/58, Environment Canterbury, Christchurch.
2. Airmetrics, 2000. MiniVol Portable Sampler Operation Manual. Airmetrics Corporation, Eugene, OR.
3. Estimating the reduction of urban PM10 concentrations by trees within an environmental information system for planners;Bealey;Journal of Environmental Management,2007
4. Effective tree species for local air-quality management;Beckett;Journal of Arboriculture,2000
5. The capture of particulate pollution by trees at five contrasting urban sites;Beckett;Arboricultural Journal,2000