Carr Hi II, R. A. , Jenkins Clarke, S. (1995) Measurement systems in principle and in practice: The example of nursing workload . Journal of Advanced Nursing22:2, 221-225 .
2.
Kernick, D. P. (1998) Has health economics lost its way?British Medical Journal317: 197-199 .
3.
Newbold D. (1995) A brief description of the methods of economic appraisal and the valuation of health states . Journal of Advanced Nursing21: 2, 325-333 .