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Farrell, Helen and Price, Liz (2013) The (unintended) benefits of green exercise. In: Active Tourism Countryside Conference, 25 January 2013, Leeds. (Unpublished)
Farrell, Helen (2007) An investigation of a GIS-based methodology for the sustainable, participative management of walking routes in Ireland. PhD thesis, Dublin Institute of Technology.
Farrell, Helen and Boyle, Ken and Rybaczuk, Krysia (2004) A GIS for walking route management. In: IGC-UK (International Geographical Union Conference), Glasgow, UK.
Farrell, Helen and Boyle, Ken and Rybaczuk, Krysia (2004) Grassroots GIS for local resource management. In: Irish Conference of Geographers, NUI Maynooth.
Farrell, Helen and Boyle, Ken and Rybaczuk, Krysia (2004) The use of GIS in establishing a trail inventory and trail-monitoring sustainability indicators. In: Environ2004: Irish Environmental Researchersï¿½ Colloquium, University of Limerick.
Farrell, Helen and Price, Liz (2010) East Lindsey Active: Green Exercise project evaluation. University of Lincoln. (Unpublished)