1. Bejan C.L., Crasmareanu M., Second order parallel tensors and Ricci solitons in 3-dimensional normal paracontact geometry, Ann. Global Anal. Geom. 46 (2014), no. 2, 117–127.
2. Blair D.E., Contact Manifolds in Riemannian Geometry, Lecture Notes in Mathematics, Vol. 509, Springer-Verlag, Berlin–Heidelberg, 1976.
3. De U.C., Yildiz A., Yalınız A.F., On ϕ-recurrent Kenmotsu manifolds, Turkish J. Math. 33 (2009), no. 1, 17–25.
4. De U.C., Ghosh S., D-homothetic deformation of normal almost contact metric manifolds, Ukrainian Math. J. 64 (2013), no. 10, 1514–1530.
5. Ghosh A., Sharma R., K-contact metrics as Ricci solitons, Beitr. Algebra Geom. 53 (2012), no. 1, 25–30.
6. Ghosh A., Sharma R., Sasakian metric as a Ricci soliton and related results, J. Geom. Phys. 75 (2014), 1–6.
7. Nagaraja H.G., Premalatha C.R., Da-homothetic deformation of K-contact manifolds, ISRN Geom. 2013, Art. ID 392608, 7 pp.
8. Nagaraja H.G., Premalatha C.R., Ricci solitons in f-Kenmotsu manifolds and 3-dimensional trans-Sasakian manifolds, Progr. Appl. Math. 3 (2012), no. 2, 1–6.
9. Nagaraja H.G., Premalatha C.R., Ricci solitons in Kenmotsu manifolds, J. Math. Anal. 3 (2012), no. 2, 18–24.
10. Shaikh A.A., Baishya K.K., Eyasmin S., On D-homothetic deformation of trans-Sasakian structure, Demonstratio Math. 41 (2008), no. 1, 171–188.
11. Sharma R., Certain results on K-contact and (k,μ)-contact manifolds, J. Geom. 89 (2008), no. 1, 138–147.
12. Sharma R., Ghosh A., Sasakian 3-manifold as a Ricci soliton represents the Heisenberg group, Int. J. Geom. Methods Mod. Phys. 8 (2011), no. 1, 149–154.
13. Tanno S., The topology of contact Riemannian manifolds, Illinois J. Math. 12 (1968), 700–717.
14. Yano K., Integral Formulas in Riemannian Geometry, Pure and Applied Mathematics, No. 1, Marcel Dekker, Inc., New York, 1970.
15. Yildiz A., De U.C., Turan M., On 3-dimensional f-Kenmotsu manifolds and Ricci solitons, Ukrainian Math. J. 65 (2013), no. 5, 684–693.
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