I. M. A. Dharmaningrat, H. Margaretha, and K. V. I. Saputra, “Predicting the Volatility of Jakarta Composite Index Using GARCH and LSTM with Volume-Up Strategy Approach”, J. Inf. Syst. Eng. Bus. Intell., vol. 11, no. 3, pp. 311–322, Oct. 2025.