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Qualitätsverbesserung
Groocock, John M., (1988)
VERTICAL PRODUCT DIFFERENTIATION, MINIMUM QUALITYSTANDARDS AND INTERNATIONAL TRADE
Petropoulou, Dimitra, (2007)
Mitarbeiteranreizsysteme und Innovationserfolg
Kraft, Kornelius,
The chain of quality : market dominance through product superiority
Groocock, John M., (1986)