Kumar, Sushil, and Punit Kumar Singh. 2023. “Csi-$\xi ^{\perp }$- Riemannian Submersions from Lorentzian Para-Kenmotsu Manifolds: Csi-$\xi ^{\perp }$-Riemannian Submersions”. International Journal of Maps in Mathematics 6 (2):114-31. https://simadp.com/journalmim/article/view/136.