Giannarakis, Grigoris, Christos Lemonakis, Asterios Sormas, and Christos Georganakis. “The Effect of Baltic Dry Index, Gold, Oil and USA Trade Balance on Dow Jones Sustainability Index World”. International Journal of Economics and Financial Issues 7, no. 5 (October 31, 2017): 155–160. Accessed April 23, 2024. https://www.econjournals.com/index.php/ijefi/article/view/4074.