The Almost Ideal Demand System can be made integrable by a slight change in its specification.

How can we best explain the behavior of exports into Britain and Germany from 1975 to 1995? Our study uses a highly disaggregated data det to find some evidence of hysteresis in trade flows (rather stronger for German imports than for British) and the role of technology proxies, particularly...

Are home and foreign products equally close substitutes? Our study uses highly disaggregated data to investigate the home preference bias in the Swedish fabricated metals sector, which appears to be declining.

In this paper, we seek to adapt the analysis of Moshini et al by proosing a block structure for the price parameter matrix. This approch is slightlymore restrictive in terms of constraining the substitution effects in a s ingle level demand system, and so conserves further degrees of freedom.