GARCH Model For Forecasting Stock Return Volatility In The Infrastructure , Utilities And Transportation Sectors. Eksis: Jurnal Riset Ekonomi dan Bisnis, [S. l.], v. 15, n. 2, p. 87–100, 2021. DOI: 10.26533/eksis.v15i2.646. Disponível em: https://ejournal.stiedewantara.ac.id/001/article/view/646. Acesso em: 29 oct. 2026.