Kusuma, D. B., and A. D. Putranto. “IMPLEMENTATION OF OPTIMUM CURRENCY AREA CRITERIA AND ITS VOLATILITY: CASE STUDY ASEAN-5+3”. Buletin Ekonomi Moneter Dan Perbankan, Vol. 13, no. 2, Nov. 2010, pp. 187-14, doi:10.21098/bemp.v13i2.390.