Putri, D., A. Afrimayani, L. Hasibuan, F. Ul Hasanah, and M. Jannah. “COMPARISON OF DOUBLE EXPONENTIAL SMOOTHING AND FUZZY TIME SERIES MARKOV CHAIN IN FORECASTING FOREIGN TOURIST ARRIVALS”. BAREKENG: Jurnal Ilmu Matematika Dan Terapan, Vol. 18, no. 3, Aug. 2024, pp. 1817-28, doi:10.30598/barekengvol18iss3pp1817-1828.