“Tsallis Entropy Perspective on Multivariate Controlled Autoregressive Fractional Integrated Moving Average System” (2026) Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), 58(1), pp. 149–159. doi:10.55562/jrucs.v58i1.13.