Investigating Dynamical Complexity and Fractal Characteristics of Bitcoin/US Dollar and Euro/US Dollar Exchange Rates around the COVID-19 Outbreak[J] ENTROPY 2023(25) Zitis, Pavlos I. I. Kakinaka, Shinji Umeno, Ken Hanias, Michael P. P. Stavrinides, Stavros G. G. Potirakis, Stelios M. M.
