Pantos, Themistoclis, Stathis Polyzos, Aggelos Armenatzoglou, and Ilias Kampouris. 2019. “Volatility Spillovers in Electricity Markets: Evidence from the United States”. International Journal of Energy Economics and Policy 9 (4):131-43. https://mail.econjournals.com/index.php/ijeep/article/view/7563.