N. M. . CHOJI, T. P. . AJAI, S. A. IHEDIOHA, and P. B. . CHUN, “PANEL DATA LINEAR METHODS IN INVESTIGATING THE LONG-RUN PURCHASING POWER PARITY THEORY FOR A GROUP OF DEVELOPED COUNTRIES”, BIMA, vol. 5, no. 03, pp. 45-53, Jan. 2022.