The Seven Lean Years, Elasticity Traps, and Intervention in Grain Markets in Pre-Industrial Europe
研究了工业化前欧洲谷物市场在连续歉收年份中的价格弹性变化，以及政府干预如何影响市场稳定，对理解历史粮食危机与政策应对有参考价值。
Karl Gunnar Persson, The Seven Lean Years, Elasticity Traps, and Intervention in Grain Markets in Pre-Industrial Europe, The Economic History Review, New Series, Vol. 49, No. 4 (Nov., 1996), pp. 692-714