B. Bappahyaya, A. Abraham Alexander, S. Zakaree, C. Imoudu Egwaikhide, and A. Yakubu, “ASSESSING THE IMPACT OF ECONOMIC SERVICES EXPENDITURE ON NIGERIAN ECONOMIC GROWTH: EVIDENCE FROM A NONLINEAR ARDL APPROACH (1981 – 2022)”, AJSBS, vol. 14, no. 6, Oct. 2024.