Georg Westermann

Combining DEA and “Transformation-Stages”: Management Strategies for the Disability Service Units of the St. Georg Association

Gerhard Johnson, Georg Westermann, Georg Westermann, 1999 .

Technological leadership and variety: A Data Envelopment Analysis for the French machinery industry

Jean Bernard, Uwe Cantner, Georg Westermann, 1996, Ann. Oper. Res..