Prasad, Rajendra, Mehmet Akif Akyol, Sushil Kumar, and Punit Kumar Singh. “Quasi Bi-Slant Submersions in Contact Geometry”. CUBO, A Mathematical Journal 24, no. 1 (April 4, 2022): 01–20. Accessed October 12, 2025. https://cubo.ufro.cl/index.php/cubo/article/view/2951.