Intraday downward/upward multifractality and long memory in Bitcoin and Ethereum markets: An asymmetric multifractal detrended fluctuation analysis

Walid Mensi, Yun Jung Lee, Khamis Hamed Al-Yahyaee, Ahmet Sensoy, Seong Min Yoon^*

^*المؤلف المقابل لهذا العمل