Wisza, Uqwatul Alma, et al. “MODEL LAJU PERUBAHAN NILAI TUKAR RUPIAH (IDR) TERHADAP POUNDSTERLING (GBP) DENGAN METODE MARKOV SWITCHING AUTOREGRESSIVE (MSAR)”. Jurnal Matematika UNAND, vol. 5, no. 3, Aug. 2016, pp. 56-64, doi:10.25077/jmu.5.3.56-64.2016.