Volatility connectedness and portfolio optimization: DeFi, green crypto, and fossil fuel energy markets amid COVID-19, Russia-Ukraine, and 2023 banking crises

Authors: Remy Jonkam Oben, Aliya Zhakanova Isiksal, Faisal Faisal
Publication: The North American Journal of Economics and Finance
Published: May 1, 2026
Source: Crossref
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