Ploymukda, Arnon, and Pattrawut Chansangiam. “Several Inequalities for Khatri-Rao Products of Hilbert Space Operators”. Communications in Mathematics and Applications 8, no. 1 (June 30, 2017): 45–60. Accessed July 22, 2024. https://rgnpublications.com/journals/index.php/cma/article/view/518.