Adams, Samuel Olorunfemi, Davies Abiodun Obaromi, and Alumbugu Auta Irinews. “Goodness of Fit Test of an Autocorrelated Time Series Cubic Smoothing Spline Model”. Journal of the Nigerian Society of Physical Sciences 3, no. 3 (August 29, 2021): 191–200. Accessed December 1, 2021. https://www.journal.nsps.org.ng/index.php/jnsps/article/view/265.