Krishnaswamy, D., and V. Selvi. “Mixed Type Reverse Order Law for the Core Inverse in \(C^*\)-Algebras”. Communications in Mathematics and Applications 12, no. 3 (September 30, 2021): 531–544. Accessed May 8, 2024. http://www.rgnpublications.com/journals/index.php/cma/article/view/1552.