1. P. W. S. Andrews, Manufacturing Business (London: Macmillan, 1963; first published 1949), pp. xvi–xvii, 28–9.
2. J. H. Clapham, ‘Of Empty Economic Boxes’ and ‘The Economic Boxes: a Rejoinder’, Economic Journal 32, 1922, pp. 305–14 and 560–3;
3. P. Sraffa, ‘The Laws of Returns Under Competitive Conditions’, ibid., 36, 1926, pp. 535–50.
4. E. H. Chamberlin, The Theory of Monopolistic Competition (Cambridge, Mass.: Harvard University Press, 1962; first published 1933), pp. 113–16, 175–6 and ch. VIII.
5. E. H. Chamberlin, Towards a More General Theory of Value (New York: Oxford University Press, 1957).