Ikhwana, N., A. Syalsabila, N. B. Mangiri, and Lalu Ramzy Rahmanda. “Trend, Cycle, and Forecasting Analysis of Monthly Inflation in Indonesia Using the Hodrick–Prescott Filter and ARIMA”. VARIANSI: Journal of Statistics and Its Application on Teaching and Research, Vol. 8, no. 1, Apr. 2026, pp. 127-36, doi:10.35580/variansiunm526.