Billionaires and GDP Growth Rates

Interesting new research:

Does Wealth Inequality Matter for Growth? The Effect of Billionaire Wealth, Income Distribution, and Poverty by Sutirtha Bagchi & Jan Svejnar

Full Paper: http://ftp.iza.org/dp7733.pdf

Non-Technical Summary:
http://www.theguardian.com/commentisfree/2015/jul/15/billionaires-drive-economic-growth-crony