- Author: Robert J. Barro, Xavier Sala-i-Martin, Walter Buhr
- Language: German
- Year: 1998
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- Language: Spanish
- Year: 2012
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- Language: Spanish
- Year: 200
- Author: Klaus Schwab & Xavier Sala-i-Martin
- Language: English
Economic Growth
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- Author: Robert J. Barro Xavier Sala-i-Martin
- Language: English
- Year: 1998
Economic Growth
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- Author: Robert J. Barro Xavier Sala-i-Martin
- Language: English
- Year: 1998
economy
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- Language: English
Economic growth
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- Author: Robert J. Barro Xavier Sala-i-Martin
- Language: English
- Year: 2003
- Author: Robert J. Barro Xavier Sala-i-Martin
- Language: English
- Year: 2003