1.
Bilichenko RO, Babenko VF. Refinement of a Hardy–Littlewood–Pólya-type inequality for powers of self-adjoint operators in a Hilbert space. Ukr. Mat. Zhurn. [Internet]. 2009Oct.25 [cited 2024Nov.22];61(10):1299-305. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3101