1. Agriculture and Agri-Food Canada (AAFC), 2010. Tools Agri-Geomatics Programs and Services. http://www4.agr.gc.ca/AAFC-AAC/display-afficher.do?id=1226606460726&lang=eng (accessed 15.11.2011).
2. Participants’ response to the Delphi method: an attitudinal perspective;Bardecki;Technol. Forecast. Soc.,1984
3. Integrated assessment of sustainability of agricultural systems and land use: methods, tools and applications;Bezlepkina;Agric. Syst.,2011
4. Use of agro-ecological indicators for the evaluation of farming systems;Bockstaller;Eur. J. Agron.,1997
5. Bylin, C., Misra, R., Murch, M., Rigterink, W., 2004. Sustainable agriculture: development of an on-farm assessment tool. Center for Sustainable Systems, Report No. CSS04-03, University of Michigan, Ann Arbor, Michigan.