Trimono, Trimono, Aviolla Terza Damaliana, and Irma Amanda Putri. 2024. “Modelling of Return of S&P 500 Using the Non Linear Generalized Autoregressive Conditional Heteroscedasticity (NGARCH) Model”. Nusantara Science and Technology Proceedings 2024 (41): 45-51. https://doi.org/10.11594/nstp.2024.4110.