M. Alomari, “New inequalities of Gr\"{u}ss--Lupa\c{s} type and Applications for Selfadjoint Operators”, Armen.J.Math., vol. 8, no. 1, pp. 25–37, Jun. 2016, Accessed: Apr. 03, 2025. [Online]. Available: https://armjmath.sci.am/index.php/ajm/article/view/121