1. The utility of health at different stages in life;Busschbach;Social Science & Medicine,1993
2. Choosing who shall not be treated in the NHS;Charny;Social Science & Medicine,1989
3. Crabtree, B., Miller, W. (1992). A template approach to text analysis: developing and using code books. In B. Crabtree, W. Miller (Eds.), Doing qualitative research. Newbury Park, CA: Sage.
4. Preferences for life saving programs;Cropper;Journal of Risk and Uncertainty,1994
5. Rationing health care by age;Evans;British Medical Journal,1997