Anell, A. (2005). Swedish health care under pressure. Health Economics, 14:S237-54.

Audit Commission (2008). The Right Result? Payment by Results 2003-2007. London: Audit Commission (http://www.audit-commission.gov.uk/SiteCollectionDocuments/Audit CommissionReports/NationalStudies/The_right_result_PbR_2008.pdf, accessed 29 June 2011).

Barnum, H., Kutzin, J., Saxenian, H. (1995). Incentives and provider payment methods. International Journal of Health Planning & Management, 10:23-45.

Biørn, E., Hagen, T.P., Iversen, T., Magnussen, J. (2003). The effect of activity-based financing on hospital efficiency: a panel data analysis of DEA efficiency scores 1992-2000. Health Care Management Science, 6:271-83.

Böcking, W., Ahrens, U., Kirch, W., Milakovic, M. (2005). First results of the introduction of DRGs in Germany and overview of experience from other DRG countries. Journal of Public Health, 13:128-37.

Borden, J.P. (1988). An assessment of the impact of diagnosis-related group (DRG)-based reimbursement on the technical efficiency of New Jersey hospitals using data envelopment analysis. Journal of Accounting and Public Policy, 7:77-96.

Chern, J.Y., Wan, T.T. (2000). The impact of the prospective payment system on the technical efficiency of hospitals. Journal of Medical Systems, 24:159-72.

Coelli, T.J., Rao, D.S.P., O'Donnell, C.J. (2005). An Introduction to Efficiency and Productivity Analysis. New York, NY: Springer Science+Business Media.

Cots, F. (2004). La sostenibilidad del sistema hospitalario en Cataluña. El balance de una decada [Viability of the hospital system in Catalonia. Balance after a decade]. Gaceta Sanitaria, 18:64-7.

Davis, C., Rhodes, D.J. (1988). The impact of DRGs on the cost and quality of health care in the United States. Health Policy, 9:117-31.

Dismuke, C., Sena, V. (1999). Has DRG payment influenced the technical efficiency and productivity of diagnostic technologies in Portuguese public hospitals? An empirical analysis using parametric and non-parametric methods. Health Care Management Science, 2:107-16.

Dismuke, C., Sena, V. (2001). Is there a trade-off between quality and productivity? The case of diagnostic technologies in Portugal. Annals of Operations Research, 107:101-16.

Ellis, R.P., McGuire, T.G. (1986). Provider behaviour under prospective reimbursement:cost sharing and supply. Journal of Health Economics, 5:129-51.

Ellis, R.P., Vidal-Fernández, M. (2007). Activity-based payments and reforms of the English hospital payment system. Health Economics, Policy and Law, 2:435-44.

Epstein, D., Mason, A. (2006). Costs and prices for inpatient care in England: mirror twins or distant cousins? Health Care Management Science, 9:233-42.

Ettelt, S., Thomson, S., Nolte, E., Mays, N. (2006). Reimbursing Highly Specialised Hospital Services: The Experience of Activity-Based Funding in Eight Countries. London: London School of Hygiene & Tropical Medicine.

Farrar, S., Sussex, J., Yi, D. et al. (2007). National Evaluation of Payment by Results. Aberdeen:University of Aberdeen Health Economics Research Unit.

Farrar, S., Yi, D., Sutton, M. et al. (2009). Has payment by results affected the way that English hospitals provide care? Difference-in-differences analysis. British Medical Journal, 339 b3047doi:10.1136/bmj.b3047.

Forgione, D.A., D'Annunzio, C.M. (1999). The use of DRGs in health care payment systems around the world. Journal of Health Care Finance, 26:66-78.

Gerdtham, U., Löthgren, M., Tambour, M., Rehnberg, C. (1999a). Internal markets and health care efficiency: a multiple-output stochastic frontier analysis. Health Economics,8:151-64.

Gerdtham, U., Rehnberg, C., Tambour, M. (1999b). The impact of internal markets on health care efficiency: evidence from health care reforms in Sweden. Applied Economics,31:935-45.

Guterman, S., Eggers, P.W., Riley, G., Greene, T.F., Terrell, S.A. (1988). The first 3 years of Medicare prospective payment: an overview. Health Care Financing Review, 9:67-77.

Hagen, T.P., Veenstra, M., Stavem, K. (2006). Efficiency and Patient Satisfaction in Norwegian Hospitals. Oslo: Health Organization Research Norway (HORN Working Paper 2006:1).

Hensen, P., Beissert, S., Bruckner-Tuderman, L. et al. (2008). Introduction of diagnosis-related groups in Germany: evaluation of impact on inpatient care in a dermatological setting. European Journal of Public Health, 18:85-91.

Jacobs, R., Smith, P.C., Street, A. (2006). Measuring Efficiency in Health Care: Analytic Techniques and Health Policy. Cambridge: Cambridge University Press.

Kahn, K.L., Keeler, E.B., Sherwood, M.J. et al. (1990). Comparing outcomes of care before and after implementation of the DRG-based prospective payment system. Journal of the American Medical Association, 264:1984-8.

Kastberg, G., Siverbo, S. (2007). Activity-based financing of health care - experiences from Sweden. International Journal of Health Planning and Management, 22:25-44.

Kjerstad, E. (2003). Prospective funding of general hospitals in Norway: incentives for higher production? International Journal of Health Care Finance and Economics,3:231-51.

Langenbrunner, J.C., Orosz, E., Kutzin, J. ,Wiley, M.M. (2005). Purchasing and paying providers, in J. Figueras, R. Robinson, E. Jakubowski, eds. Purchasing to Improve Health Systems Performance. Maidenhead: Open University Press.

Linna, M., Häkkinen, U., Magnussen, J. (2006). Comparing hospital cost efficiency between Norway and Finland. Health Policy, 77:268-78.

Louis, D.Z., Yuen, E.J., Braga, M. et al. (1999). Impact of a DRG-based hospital financing system on quality and outcomes of care in Italy. Health Services Research, 34:405-15.

Magnussen, J., Hagen, T.P., Kaarboe, O.M. (2007). Centralized or decentralized? A case study of Norwegian hospital reform. Social Science & Medicine, 64:2129-37.

Manton, K.G., Woodbury, M.A., Vertrees, J.C., Stallard, E. (1993). Use of Medicare services before and after introduction of the prospective payment system. Health Services Research, 28:269-92.

Moreno-Serra, R., Wagstaff, A. (2010). System-wide impacts of hospital payment reforms:evidence from central and eastern Europe and central Asia. Journal of Health Economics,29:585-602.

Muller, A. (1993). Medicare prospective payment reforms and hospital utilization:temporary or lasting effects? Medical Care, 31:296-308.

Or, Z. (2009). Activity-based payment in France. Euro Observer, 11:5-6.

Robinson, R., Jakubowski, E., Figueras, J. (2005). Organization of purchasing in Europe, in J. Figueras, R. Robinson, E. Jakubowski, eds. Purchasing to Improve Health Systems Performance. Maidenhead: Open University Press.

Rosenberg. M.A., Browne, M.J. (2001). The impact of the inpatient prospective payment system and diagnosis-related groups: a survey of the literature. North American Actuarial Journal, 5:84-94.

Schreyögg, J., Tiemann, O., Busse, R. (2005). The DRG reimbursement system in Germany. Euro Observer, 7:4-6.

Shleifer, A. (1985). A theory of yard stick competition. Rand Journal of Economics, 16:319-27.

Sommersguter-Reichmann, M. (2000). The impact of the Austrian hospital financing reform on hospital productivity: empirical evidence on efficiency and technology changes using a non-parametric input-based Malmquist approach. Health Care Management Science, 3:309-21.

Street, A., Häkkinen, U. (2010). Health system productivity and efficiency, in P.C. Smith,E. Mossialos, I. Papanicolas, S. Leatherman, eds. Performance Measurement for Health System Improvement: Experiences, Challenges and Prospects. Cambridge: Cambridge University Press.

Street, A., Scheller-Kreinsen, D., Geissler, A., Busse, R. (2010). Determinants of Hospital Costs and Performance Variation: Methods, Models and Variables for the EuroDRG Project.Berlin: Universitätsverlag der Technischen Universität Berlin (working Papers in Health Policy and Management Volume 3).

Street, A., Vitikainen, K., Bjorvatn, A., Hvenegaard, A. (2007). Introducing Activity-Based Financing: A Review of Experience in Australia, Denmark, Norway and Sweden. York:University of York Centre for Health Economics (CHE Research Paper 30).

Theurl, E., Winner, H. (2007). The impact of hospital financing on the length of stay:evidence from Austria. Health Policy, 82:375-89.

US Congress Office of Technology Assessment (1985). Medicare's Prospective Payment System: Strategies for Evaluating Cost, Quality, and Medical Technology. Washington, DC:United States Government Printing Office.

WHO (2000). The World Health Report 2000 - Health Systems: Improving Performance.Geneva: World Health Organization.