Media type: E-Article Title: Environmental Kuznets Curves for air pollution in African and developed countries: exploring turning point incomes and the role of democracy Contributor: Sulemana, Iddisah; James, Harvey S.; Rikoon, James S. imprint: Informa UK Limited, 2017 Published in: Journal of Environmental Economics and Policy Language: English DOI: 10.1080/21606544.2016.1231635 ISSN: 2160-6544; 2160-6552 Origination: Footnote: