1. What do utilities measure?;Tsevat;Med Care,2000
2. Theory of Games and Economic Behavior;von Neumann,1953
3. Methods for the Economic Evaluation of Health Care Programmes;Drummond,2005
4. QALYS and ethics: a health economist's perspective;Williams;Soc Sci Med,1996
5. Vision and quality-of-life;Brown;Trans Am Ophthalmol Soc,1999