Has the Caveat of Case-Mix Based Payment Influenced the Quality of Inpatient Hospital Care in Portugal?
Clara Elizabeth Dismuke, Paulo Guimarães
Applied Economics, vol. 34, 2002, p. 1301-1307.

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
Clara Elizabeth Dismuke, Vania Sena
Health Care Management Science, vol. 2, 1999, p. 107-116.