http://onlinelibrary.wiley.com/store/10.1111/gove.12151/asset/gove12151.pdf;jsessionid=637CF707E22D7F960134203AEEE26292.f03t01?v=1&t=j0oc9s19&s=d0832597b56b5c83a5c8fb7bc803e87a22b9e172
http://www.newsweek.com/fossil-fuels-environment-renewable-energy-448982
