1. Allen, R. G. D.: Macro-Economics, St. Martin’s Press, 1967.
2. Domar, Evsey D.: “Expansion and Unemployment,” American Economic Review, March 1947.
3. Goldsmith, Raymond: A Study of Saving in the United States, Princeton, 1955.
4. Hahn, F. H., and R. C. O. Mathews: “The Theory of Economic Growth: A Survey,” Surveys of Economic Theory, Vol. II, St. Martin’s Press, 1967.
5. Harrod, Roy F.: “An Essay in Dynamic Theory,” Economic Journal, March 1939.