Prof. Mushtaque Khan, and Nasim Akhtar, translators. “Study of a Compact Operator ”. International Journal of Scientific Research in Science and Technology, vol. 11, no. 3, May 2024, pp. 837-9, https://www.ijsrst.technoscienceacademy.com/index.php/home/article/view/IJSRST24113249.