Referencias Blanco, I., 2001. Control de plagas y enfermedades del tabaco. Enciclopedia Básica del cultivo del tabaco. Cultivadores de Tabaco de España. Blanco, I., Cano, E.I., 2005. Guía técnica básica para mejorar la calidad y la competitividad del tabaco Virginia español. Cultivadores de Tabaco de España. Madrid. Brown, N., 1999. Towards sustainable agriculture. A pilot set of indicators. www.maff.gov.uk Bebbington, A., 1999. Capital and capabilities: a framework for analyzing peasant viability, rural livelihoods and poverty. World Develop. 27, 2021-2044. Becu, n., Perez, P., Walker, A., Barreteau, O., Le Page, C., 2004. Agent based simulation of a small catchment water management in northern Thailand: description of the CATCHSCAPE model. Ecol. Model. 170 (2-3), 319-331. Biewinga, E.E., van der Bijl, G., 1996. Sustainability of Energy Crops in Europe: A Methodology developed and Applied. Centre for Agriculture and Environment, Utrecht, The Nederlands, p. 209. Bollen, K.A.,1989. Structural Equations with latent variables. Wiley, New York. Buchs, W., 2003. Biotic indicators for biodiversity and sustainable agricultureintroduction and background. Agriculture Ecosystems and Environment no. 98, 1-16. Chamberlain, B., 2004. Farm Management Indicators for the Environment: a New Zealand perspective with emphasis on developing receptive receiving environments to maximize the usefulness of indicators. New Zealand, 8-12 March 2004. Commission of the European Communities, 2000. Communication from the commission to the council and the European Parliament. Indicators for the Integration of Environmental Concerns into the Common Agricultural Policy. Brussels, 26.01.2000. Commission of the European Communities, 2001. Communication from the Commission to the Council and the European Parliament. Statistical Information needed for Indicators to monitor the Integration of Environmental concerns into the Common Agricultural Policy. Brussels, 20.03.2001. De Koning, G.H.J., van der Kop, P.J., Fresco, L.O., 1997. Estimates of sub-national nutrient balances as sustainability indicators for agro- ecosystems in Ecuador. Agric. Ecosyst. Environ. 65 (2), 127-139. Elad, CH., 2003. Fair Value Accounting in the Agricultural Sector: Some Implications for International Accounting Harmonization. European Accounting Review, vol.13 no. 4, 621-641, 2004. Esposti, R., Pierani P., 2000. Modelling technical change in Italian agriculture: a latent variable approach. Agricultural Economics 22, 261-270. FAO, 2003. Statistics Analysis Service, Statistics Division Food and Agriculture Organization of the United Nations. Rome. November, 2003. Geier, U., Köpke, U., 1998. Comparison of convencional and organic farming by process-life cycle assessment. A case study of agriculture in Hamburg. In: Proceedings of the International Conference on Life Cycle Assessment in Agriculture, Agro-industry and Forestry, Brussels, Belgium, 31-38. Giupponi, C., Eiselt, B., Ghetti, P.F., 1999. A multicriteria approach for mapping risks of agricultural pollution for water resources: the Venice Lagoon watershed case study. Journal of Environment Management. 56 (4), 259-269. Hengsdijk, H., van Ittersum, M.K., 2003. Formalizing agro-ecological engineering for future-oriented land use studies. European Journal Agron. 19 (4), 549-562. Jöreskog, K.G, Sörbom, D., 1989. LISREL 7: User´s Reference Guide. Scientific Software Inc., Mooresville, USA. Menge, M., 2003. Experiences with the application, recordation and valuation of agrienvironmental indicators in agricultural practice. Agriculture, Ecosystems and Environment 98, 443-451. Oakland, J.S., 1989. Total quality management. The route to improving performance. Butterworth- Heinemann Ltd., Oxford. OECD, 1997. Environmental Indicators for Agriculture, vol.1: Concepts and Framework. Publications Service, OECD, Paris. Oñate, J., Andersen, E., Peco, B., Primdahl, J., 2000. Agri-environmental schemes and the European agricultural landscapes: the role of indicators as valuing tools for evaluation”. Landscape Ecology. Vol.15, no. 3, 271-280, April 2000. Parris K., 1999. OECD Agri-environmental indicators: Work in Progress, extracts from the OCDE publication: Measuring the environmental impacts of Agriculture: The York Workshop, 58-61. Payraudeau, S., van der Werf, H.M.G., 2005. Environmental impact assessment for a farming region: a review of methods. Agriculture Ecosystems and Environment no. 107, 1-19. Petersen, J.E., 2004. Development of farm management indicators in the European Union: Work under the EU´s Indicator Reporting on the Integration of Environmental Concerns into Agriculture Policy. OECD 8-12 March, 2004. Petit, O., Corcos, B., O`Connor, M., 2001. Appropriation Sociale du problème de gestion durable de la nappe de Beauce. Programme Inter-institutionnel de Recherches et d`Etudes en Economie de l`Environnement (PIREE) du Ministère de l`Aménagement du Territoire et de l`Environnement. Université de Versailles-Saint Quentin en Yvelines, Guyancourt, France , p. 90. Piorr, H-P., 2003. Environmental policy, agri-environmental indicators and landscape indicators. Agriculture Ecosystems and Environment no. 98, 17-33. Rasul, G., Thapa, G.B., 2004. Sustainability of ecological and conventional agricultural system in Bangladesh: an assessment based on environmental, economic and social perspectives. Agricultural Systems 79 (3), 327-351. RIRDC, 2001. Rural benchmarking programs – A review short report 74. http://www.rirdc.gov.au/Review Rodrigues, G.S., Champanhola, C., Kitamura, P.C., 2003. An environmental impact assessment system for agricultural R&D. Environment Impact Assessment. Rev. 23 (2), 219-244. Rodríguez, J.A., 2001. Consideraciones medioambientales en el cultivo del tabaco en España. Cultivadores de Tabaco de España. Rodríguez, R., 1999. El diseño del cuadro de mando integral en empresas agrarias. Revista Iberoamericana de Contabilidad de Gestión. Ronan, G., Taylor, P., 2003. Benchmarking in Agriculture: Measuring competitiveness indicators. Paper for presentation to the Agricultural Productivity Index Symposium of the Asian Productivity Organisation, Bangkok, Thailand 15-17 December 2003. Ronan, G., Cleary, G., 2000. Best practice benchmarking in Australian agriculture: issues and challenges. www.agribusiness.asn.au/Review/Perspectives/2000hadbolt.htm Smaling, E.M.A., Dixon, J., 2006. Adding a soil fertility dimension to the global farming systems approach, with cases from Africa. Agriculture Ecosystems and Environment no. 116, 15-26. Van der Werf, H.M.G., Petit, J., 2002. Evaluation of the environmental impact of agriculture at the farm level: a comparison and analysis of 12 indicator-based methods. Agriculture Ecosystems and Environment 93, 131-145. Wiren –Lehr, S., 2001. Sustainability in agriculture - an evaluation of principal goal oriented concepts to close the gap between theory and practice. Agriculture Ecosystems and Environment no. 84, 115-129. Zander, P., Kächele, H., 1999. Modelling multiple objectives of land use for sustainable development. Agricultural Systems 59 (3) 311-325.