1. Savings measurement for capital equipment purchasing: challenges and conceptual model;International Journal of Productivity and Performance Management;2013-07-22
2. Environmental purchasing: a framework for theory development;European Journal of Purchasing & Supply Management;2001-03
3. Purchasing’s involvement in environmental issues: a multi‐country perspective;Industrial Management & Data Systems;1998-11-01
4. Managing value in reverse logistics systems;Transportation Research Part E: Logistics and Transportation Review;1998-09
5. A Hierarchy of Purchasing Competencies;Journal of Purchasing and Materials Management;1984-03