“Generalized QR (GQR)- Lightlike Submanifolds of Indefinite Quaternion Kähler Manifolds”. Journal of International Academy of Physical Sciences 25, no. 4 (December 15, 2021): 475–494. Accessed October 23, 2026. http://www.iaps.org.in/journal/index.php/journaliaps/article/view/894.