Canh, Nguyen Phuc, Su Dinh Thanh, Christophe Schinckus, Jo Bensemann, and Lai Trung Thanh. 2019. “Global Emissions: A New Contribution from the Shadow Economy”. International Journal of Energy Economics and Policy 9 (3):320-37. https://econjournals.com/index.php/ijeep/article/view/7244.