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3. Anon (2010), It’s a smart world, The Economist, London, November 6th, pp. 3–24.
4. Anon (2012a), Lost economic time: the Proust index, The Economist, London, February 25th, pp. 73–74.
5. Anon (2012b), Taking the long view, The Economist, London March 3rd, pp. 21–22.