Sanati RG, Ansari-piri E, Kardel M. Operators preserving orthogonality on Hilbert $\it{K}(H)$-modules. MFAT [Internet]. 2019 Jun. 25 [cited 2026 Feb. 4];25(2):189-94. Available from: https://zen.imath.kiev.ua/index.php/mfat/article/view/722