Price endogenous sector models have long been used for agricultural policy analysis. Some earlier works have shown that the performance of agriculture is strongly influenced by the overall national income level. This article demonstrates that the distribution of income is as important as the...

Serious aggregation errors may arise in mathematical programming sector models when aggregation is not properly done. Existing aggregation literature mostly focuses on exact aggregation of homogenous groups of firms. However, homogeneity rarely holds in real problem situations. Moreover,...