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2023. Twice Differentiable Ostrowski Type Tensorial Norm Inequality for Continuous Functions of Selfadjoint Operators in Hilbert Spaces. European Journal of Pure and Applied Mathematics. 16, 3 (Jul. 2023), 1421–1433. DOI:https://doi.org/10.29020/nybg.ejpam.v16i3.4843.