“Using Semi-Parametric Approach to Estimate Amounts of Entering Water in Degla’s River Model As a Class of Seasonal Integrated Fractional Processes”. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ) 36, no. 2 (November 19, 2015): 44–61. Accessed October 4, 2025. https://jrucs.iq/index.php/JAUCS/article/view/250.