Kalybay, Aigerim, and Saltanat Shalginbayeva. “Estimate of the Best Constant of Discrete Hardy-Type Inequality With Matrix Operator Satisfying the Oinarov Condition”. Eurasian Mathematical Journal 15, no. 2 (July 15, 2024): 42–47. Accessed November 21, 2024. https://emj.enu.kz/index.php/main/article/view/341.