1. Top Management's View of the Purchasing Function;Ammer;Journal of Purchasing and Materials Management,1989
2. Estimating nonresponse bias in mail Surveys;Armstrong;Journal of Marketing Research,1977
3. Strategic purchasing planning;Browning;Journal of Purchasing and Materials Management,1983
4. Strategic Proactive Procurement;Burt,1996
5. purchasing's role in new product development;Burt;Harvard Business Review,1985