Devgan, Anu, and R. K. Nagaich. “Totally Contact Umbilical Radical Transversal Lightlike Submanifolds Of An Almost Contact Manifold With B-Metric”. JOURNAL OF ADVANCES IN MATHEMATICS 13, no. 4 (July 3, 2017): 7286–7294. Accessed April 23, 2024. https://rajpub.com/index.php/jam/article/view/6234.