1. The measurement of hospital output;M, Rosser R.; C, Watts V.;International journal of epidemiology,1972
2. Qualms about QALYs;Smith, A.;Lancet,1987
3. Economics of coronary artery bypass grafting;Williams, A.,1985
4. QALYfying the value of life. J7ournal ofmedical;Harris, J.;ethics,1987
5. Utilitarianism;S, Mill J.,1961