Meraj, Ali Khan. “Contact $CR$-Warped Product of Submanifolds of the Generalized Sasakian Space Forms Admitting the Nearly Trans-Sasakian Structure”. Ukrains’kyi Matematychnyi Zhurnal, vol. 70, no. 10, Oct. 2018, pp. 1417-28, https://umj.imath.kiev.ua/index.php/umj/article/view/1645.