См.: Kahn, Herman. On Thermonuclear War (1960), New Brunswick (NJ): Transaction Publishers, 2006, p. 148.

 См., напр.: Tinbergen, Jan. ‘Do Communist and Free Economies Show Convergence Patterns?’ in: Soviet Studies, 1961, Vol. 12, № 4, pp. 333–341 и Kerr, Clark, Dunlop, John T., Harbison, Frederick and Myers, Charles. Industrialism and Industrial Man: The Problems of Labor and Management in Economic Growth, Hammondsworth: Penguin Books, 1960.