Sulistiowati, D., Syahrul, M. S. ., & Rianjaya, I. D. . (2021). Risk Analysis of Gold Sale Price and Investment of Antam Shares Using Expected Shortfall in Pandemic Covid-19. Jurnal Matematika, Statistika Dan Komputasi, 17(3), 428–437. https://doi.org/10.20956/j.v17i3.12779