Economic Growth and Convergence in Latin America
研究了拉丁美洲国家间收入差距是否缩小（sigma趋同）以及是否向各自稳态收入水平趋同（条件beta趋同），发现整体上收入差距未缩小，但存在条件趋同，且结果受人均GDP衡量方式影响。
Little is known about the convergence process among developing countries in general and in Latin America in particular. For the period as a whole there is no evidence of a narrowing in the cross-country dispersion of income (sigma convergence). But there is evidence of convergence to different steady state income levels at a speed that is common to all countries (conditional beta convergence). The article also shows that the estimates of convergence are sensitive to the way in which GDP per capita is measured.