Wulandary, Septie. “Vector Autoregressive Integrated (VARI) Method for Forecasting the Number of Internasional Visitor in Batam and Jakarta”. Jurnal Matematika, Statistika Dan Komputasi, vol. 17, no. 1, Aug. 2020, pp. 94-108, doi:10.20956/jmsk.v17i1.10536.