U. M. . Kallah, H. . Sanusi, and N. A. . Ibrahim, “Unit Root Dynamics in Financial Time Series: A Comparative Study of Parametric and Non-Parametric Testing Frameworks”, Am. J. Appl. Stat. Econ., vol. 5, no. 2, pp. 12–18, Jul. 2026, doi: 10.54536/ajase.v5i2.7557.