Conditions of Agricultural Growth: The Economics of Agrarian Change under PopulationPressure)》中指出:從歸納性、經驗性的案例分析來看,馬爾薩斯對農業規模與人口之間一對一的關係與演繹概念的假定實際上是相反的。Boserup
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High Salt Intake and Blood Pressure Increase (pdf). [2006-02-08]. [永久失效連結] Weinberger Myron H. Salt Sensitivity of Blood Pressure in Humans. Hypertension