Ritha, N. ., T. . Matulatan, and R. . Hidayat. “Penerapan Fuzzy Time Series Stevenson Porter Pada Peramalan Pergerakan Nilai Forex”. Prosiding SEMNAS INOTEK (Seminar Nasional Inovasi Teknologi), vol. 4, no. 3, Aug. 2020, pp. 179-84, doi:10.29407/inotek.v4i3.83.