P. Sam Johnson, Vinoth A, K. Kamaraj. Fuglede-Putnam type commutativity theorems for EP operators. Malaya J. Mat. [Internet]. 2021 Jan. 1 [cited 2024 Nov. 22];9(01):709-14. Available from: https://www.malayajournal.org/index.php/mjm/article/view/1117