SarkarA., SilA. and PaulA. K. (2020) “Some characterizations of three-dimensional trans-Sasakian manifolds admitting η- Ricci solitons and trans-Sasakian manifolds as Kagan subprojective space”, Ukrains’kyi Matematychnyi Zhurnal, 72(3), pp. 427-432. doi: 10.37863/umzh.v72i3.6047.