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[Preliminary version], Wuppertal : Bergische Univ. Wuppertal, 2015Measurement, monitoring and forecasting of consumer credit default risk
an indicator approach based on individual payment historiesWuppertal : Bergische Univ. Wuppertal, 2011Mirror, mirror on the wall, who is the most entrepreneurial of them all?
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Wuppertal : Bergische Univ. Wuppertal, 2008