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2. Hansen, A.H. (1924a) ‘Prime costs in the business cycle.’ Journal of Political Economy, Feb vol.32, no.1, pp.1–14. https://doi.org/10.1086/253575
3. Hansen, A.H. (1925a) ‘Factors affecting the trend of real wages.’ American Economic Review, Mar vol.15, p.27. https://www.jstor.org/stable/1808477
4. Hansen, A.H. (1925b) ‘The effect of price fluctuations on agriculture’ Journal of Political Economy, Apr vol.33, p.196. https://doi.org/10.1086/253663
5. Hansen, A.H. (1927a) Business cycle theory, its development and present status. Boston: Ginn and Company.