Nwaogu, D. C. ., and G.-F. . Umahi. “Econometric Estimation of Rice Price Volatility in Nigeria (1981 – 2021): Application of GARCH and ARCH Models”. Jordan Journal of Economic Sciences, vol. 12, no. 2, July 2025, pp. 123-37, doi:10.35516/jjes.v12i2.2284.