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Hawes, M., Candy, S. & Dixon, G. 2006. A method for surveying the condition of extensive walking track systems. Landscape and Urban Planning, 78/3: 275-287.
Dixon, G., Hawes, M. & McPherson, G. 2004. Monitoring and modelling walking track impacts in the Tasmanian Wilderness World Heritage Area, Australia. Journal of Environmental Management 71/4: 303-318.