Putra, Guntur Kharisma, and Irwan Adi Ekaputra. “Risk-Adjusted Performance, Performance Persistence, and Portfolio Diversification of Multi-Crypto Exchange-Traded Products”. AFRE (Accounting and Financial Review), vol. 9, no. 2, Sept. 2026, pp. 249-73, doi:10.26905/afr.v9i2.17399.