Nwokolo, Samuel, and Julie Ogbulezie. “A Single Hybrid Parameter-Based Model for Calibrating Hargreaves-Samani Coefficient in Nigeria”. International Journal of Physical Research 5, no. 2 (August 20, 2017): 49–59. Accessed November 23, 2024. https://sciencepubco.com/index.php/IJPR/article/view/8042.