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A meta-analysis of β-convergence : the legendary 2%
Abreu, Maria, (2005)
A meta-analysis of beta-convergence : the legendary two-percent
The Impact of Nonresponse Rates on Nonresponse Bias : A Meta-Analysis
Groves, Robert M., (2010)
Space and growth : a survey of empirical evidence and methods
Abreu, Maria, (2004)