An Empirical Examination of the Structural Stability of Disaggregated U.S. Import Demand
重新估计了美国总进口需求，并更新了五类经济商品的进口需求估计，检验了这些需求函数的结构不稳定性，对检测到不稳定的方程按稳定性测试建议重新估计。
We present three related types of evidence on U.S. import demand. First, aggregate import demand is reestimated for comparison with previous research. Second, we provide updated estimates of import demand for five economic classes: crude foods, crude materials, manufactured foods, semi- manufactures, and finished manufactures. Finally, each of these import demand functions is tested for any evidence of structural instability, and in those cases where instability is detected, the demand equations are reestimated along the lines suggested by the stability tests. Copyright 1989 by MIT Press.