中国科学院数学与系统科学研究院期刊网
Impacts of CME Changing Mechanism for Allowing Negative Oil Prices on Prices and Trading Activities in the Crude Oil Futures Market
LU Fengbin, BU Hui
Journal of Systems Science and Complexity . 2023, (5): 2001 -2025 .  DOI: 10.1007/s11424-023-1312-z