1. Abel-Smith B, et al. Reforming the Greek NHS: a Proposal to the Minister of Health, Pharmetrica, Athens, 1994.
2. Barr N. Economics of Welfare State, London, 1987.
3. Berki SE. Hospital Economics, Lexington Books, USA: Heath and Company, 1972.
4. The Specification of a Hospital Cost Function: a comment on the recent literature;Breyer;Journal of Health Economics,1987
5. Hospital Cost Analysis;Butler,1995