Azzakhy, M. F. and Sumarto, A. H. (2026) “Analysis of the Jakarta Islamic Index (JII) Using the Autoregressive Integrated Moving Average (ARIMA) Method During and After the COVID-19 Pandemic”, International Journal of Sustainable Applied Sciences, 4(10), pp. 1381–1392. doi: 10.59890/ijsas.v4i10.78.