Miah, Md Shapan, and Khondokar M Ahmed. “Conformal Killing Vector Fields of Riemannian Manifolds”. Dhaka University Journal of Science 70, no. 2 (December 18, 2022): 18–22. Accessed June 30, 2024. https://banglajol.info/index.php/DUJS/article/view/62601.