Impact of the Global Fear Index (COVID-19 Panic) on the S&P Global Indices Associated with Natural Resources, Agribusiness, Energy, Metals, and Mining: Granger Causality and Shannon and Rényi Transfer Entropy. - Pedro Celso-Arellano; Victor Gualajara; Semei Coronado; Jose N. Martinez; Francisco Venegas-Martínez (Entropy, 2023)