1. Bertrand JWM, Wortmann JC, Wijngaard J. Production control. A structural and design oriented approach. Amsterdam: Elsevier, 1990.
2. Clementine Datamining System, version 6.0.1. User guide. SPSS Inc., 2000.
3. CaseMix Quarterly of the Patient Classification System Europe organization Web Site. Available at http://www.casemix.org.
4. Diagnosing myocardial perfusion SPECT bull’s-eye maps: a knowledge discovery approach;Cios;IEEE Eng. Med. Biol.,2000
5. Using clustering analysis for medical resource decision making;Dilts;Med. Decision Mak.,1995