Taiwo, Abass I., Timothy Olabisi Olatayo, Adedayo Funmi Adedotun, and kazeem kehinde adesanya. 2019. “Modeling and Forecasting Periodic Time Series Data With Fourier Autoregressive Model”. Iraqi Journal of Science 60 (6): 1367-73. https://doi.org/10.24996/ijs.2019.60.6.20.