Horváth, László, Khuram Ali Khan, and Josip Pečarić. “Refinements of Determinantal Inequalities of Jensen’s Type”. Eurasian Mathematical Journal 6, no. 3 (September 30, 2015): 30–44. Accessed September 18, 2025. https://emj.enu.kz/index.php/main/article/view/614.