英文文献：Enhancing The Competitiveness And Risk-Efficiency Of Farm Assets Through Holding Farm/Financial Asset And Off-Farm Income Portfolios-通过持有农业/金融资产和非农收入组合，提高农业资产的竞争力和风险效率
英文文献作者：Lagerkvist, Carl Johan,Gregory, Mark,Olson, Kent D.
英文文献摘要：
This study employs a dynamic continuous time model to calculate farm and total farm/financial/off-farm investment portfolios. Data are from the Southwestern Minnesota Farm Business Management Association records. Results are derived for classes of farms sorted by farm profitability. It is shown that this categorization of farm assets has a significant impact on the portfolio results as well as on the degree of competitiveness of the farm asset in relation to financial assets. The impact of off-farm income to portfolio selection is modest but found to differ across farm types.

本研究采用动态连续时间模型来计算农场和农场/金融/非农投资组合。数据来自西南明尼苏达农场商业管理协会的记录。结果是根据农场盈利能力分类得出的。研究表明，这种农业资产分类对组合结果以及农业资产相对于金融资产的竞争力程度有显著影响。非农收入对投资组合选择的影响不大，但发现不同农场类型的投资组合有差异。