On trans-Sasakian $3$-manifolds as $η$-Einstein solitons - Ganguly, D.; Dey, S.; Bhattacharyya, A. (Karpats'kì matematinì publìkacìï, 2021)
Keywords: c$-bochner curvature tensor; codazzi type ricci tensor; einstein soliton; eta$-einstein soliton; trans-sasakian manifold