By Alexandropoulou Dionysia A.   Angelis Vasilis A.   Mavri Maria   in International Journal of Knowledge and Learning

ISSN:1741-1009|5|1|96-106

Inderscience Publishers‎(2009)‎

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By Salamoura Maria   Angelis Vasilis   Kehagias John   Lymperopoulos Constantine   in Managing Service Quality

ISSN:0960-4529|18|5|425-441

Emerald Group Publishing Ltd‎(2008)‎

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