Perbandingan model Threshold Generalized Autoregressive Conditional Heteroskedasticity (TGARCH) dan Asymmetric Power Autoregressive conditional Heteroskedasticity (APARCH) pada peramalan harga saham (studi kasus Bank Jatim) / Zidni Ilma Khusnia - Khusnia, Zidni Ilma (2020)