Ben Amar, A., B. Lmasrar, and M. Bouattour. “Are European and U.S. Natural Gas Futures Markets Integrated? Insights from Network-Connectedness and Cross-Herding Analysis”. Economics and Business Letters, vol. 14, no. 2, Apr. 2025, pp. 106-1, doi:10.17811/ebl.14.2.2025.106-116.