1. Ajzen, I. and Fishbein, M. (1980) Understanding Attitudes and Predicting Social Behaviour. Englewood Cliffs: Prentice Hall
2. de Graaf, C., Van der Gaag, M., Kafatos, A., Lennernas, M., and Kearney, J.M. (1997) Stages of dietary change among nationally representative samples of adults in the European Union. European Journal of Clinical Nutrition, 51, Supp1. 2: 41–46
3. Ember, M., Ross, M.H., Burton, M. and Bradley, C. (1991) Problems of measurement in cross-cultural research using secondary data. Behavior Science Research, 25: 187–216
4. FAO/WHO (1991) Food and Agriculture Organisation/World Health Organisation. Protein quality evaluation (FAO food and nutrition paper 51 ) Rome: FAO/WHO
5. FAO/WHO (1992) Major issues for nutrition strategies. International Conference on Nutrition. Food and Agriculture Organisation/World Health Organisation.Rome: FAO/WHO Eurostat (1993) Europe in Figures. Office for Official Publications of the European Commission, Luxembourg