1. Industrial Purchasing: An Empirical Exploration of the Buyclass Framework
2. ARROW, K. The organisation of economic activity: issues pertinent to the choice of market versus non-market allocation. The Analysis and Evaluation of Public Expenditure: The PPB System, vol. I. US Joint Economic Commiltee, 91st Congress, 1st Session. vol. I, pp.59–73. Washington, DC: US Government Printing Office.