Energy References
- UNEP, Division of Technology, Industry and Economics, Energy & Environment, www.uneptie.org/energy/env/index.htm (accessed 23/04/03)
- C. de Haan, H. Steinfeld & H. Blackburn, 'Livestock and the Environment: Finding a Balance' FAO, USAID, World Bank, 1998
- R.K. Heitschmidt, et al. 'Ecosystems, Sustainability, and Animal Agriculture,' Journal of Animal Science 1996; 74:1395-1405
- R. A. Brand & A. G. Melman, (1993). Energie inhoudnormen van de veehouderij; deel 2 proceskaarten. (Energy values of inputs of animal husbandry). TNO, Instituut voor milieu-en energietechnologie, Apeldoorn, The Netherlands. Cited in C. de Haan, H. Steinfeld & H. Blackburn, 1998, op cit.
- P. Southwell & T. M. Rothwell (1977). Analysis of Output/Input Energy Ratios of Food Production in Ontario. School of Engineering, University of Guelph, Guelph, Canada. Cited in C. de Haan, H. Steinfeld & H. Blackburn, 1998, op cit.
- WorldWatch Institute 'The Price of Beef'1994
- R. Goodland & D. Pimentel, 'Sustainability and Integrity in the Agriculture Sector,' Ecological Integrity: Integrating Environment, Conservation and Health, D. Pimentel, L. Westra, R. F. Noss (eds), Island Press, 2000.