M. Usman, M. Komarudin, N. Nurhanurawati, E. Russel, W. Wamiliana, and F. . A. Elfaki, “Analysis Forecasting of Gasoline Prices in Some ASEAN Countries by Using State Space Representation on Vector Autoregressive Model”, IJEEP, vol. 13, no. 6, pp. 194–202, Nov. 2023.