1. and (1970). Mathematical Theories of Economic Growth, London: Macmillan.
2. The dynamic behaviour of workers' enterprises
3. and (1982). Capitalism, communism and labour management in a dynamic nutshell under constant returns to scale. In Workers and Incentives (edited by ), Chapter 10, Amsterdam: North-Holland.
4. and (1963). Determinants of business investment. In Impact of Monetary Policy (edited by et al.), Englewood Cliffs, NJ: Prentice-Hall.