Rehman , H. ur ., I. S. . Chaudhry, N. . Arshed, and M. S. . Sardar. “The Nonlinear Relationship Between Trade Balance and Income for Selected Asian Economies”. Review of Applied Management and Social Sciences, vol. 3, no. 2, Sept. 2020, pp. 177-92, doi:10.47067/ramss.v3i2.52.