1. On responsibility and authority
2. Quality Circles, the Production Function and Quality of Working Life: Results of a Study in Seven Large Companies
3. Fisscher, A.M. (1994), Kwaliteitsmanagement en bedrijfsethisch handelen, Faculteit der Technische Bedrijfskunde, Universiteit Twente, Enschede.
4. Gits, C.W. (1984), On the Maintenance Concept for a Technical System – A Framework for Design, Helmond, Dissertatie Drukkery Wibro.
5. Simon, J.C. and Hoes, F. (1994), “Standard based quality – the use of ISO 9000 standards and total quality”, EOQ, pp. 169‐78.