英文文献：Examining Income Convergence in Southern United States-考察美国南部的收入趋同现象
英文文献作者：Gyawali, Buddhi Raj,Banerjee, Swagata (Ban),Bukenya, James O.
英文文献摘要：
County-level data for 11 southern states were used to examine income convergence between 1980 and 2000. Ordinary least squares regression of logarithmic difference on average per capita income in 1980 and 2000 indicated conditional income convergence over the 20-year period. The estimated rate of income convergence was 3.82% per year. This convergence varied across the region based on the initial and changed conditions of population density, African-American population, employment, education, age structure, and travel time to work.

美国南部11个州的县级数据被用来检验1980年至2000年之间的收入趋同。1980年和2000年平均人均收入对数差的普通最小二乘回归表明20年期间有条件的收入收敛。估计的收入趋同率为每年3.82%。由于人口密度、非裔美国人人口、就业、教育、年龄结构和上班的时间等因素的初始和变化，这种融合在整个地区都有所不同。