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Farrell, Helen and Rybaczuk, Krysia (2007) A description of the use of GIS in tourism development and management in the Glen of Aherlow, Co. Tipperary. Trinity Papers in Geography . ISSN UNSPECIFIED
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 (2007) An investigation of a GIS-based methodology for the sustainable, participative management of walking routes in Ireland. PhD thesis, Dublin Institute of Technology.