1. X. Chen and Y. Yang, Static perfect fluid space-time on contact metric manifolds, Period.Math. Hung. 86(2023), 160-171.
2. F. Coutinho, R. Diogenes, B. Leandro, and E. Ribeiro Jr, Static perfect fluid space-time on compact manifolds, Class. Quantum Grav. 37(2019), 003-015.
3. U. C. De. and A. Sardar, On static perfect fluid spacetimes and almost co-K¨ahler manifolds, Asian-European Journal of Mathematics, 17(2024), 1-17.
4. O. Kobayashi and M. Obata, Conformally-flatness and static space-time, Manifolds and Lie-Groups, Progress in Mathematics, Brikhauser, 14(1981), 197-206.
5. H. Kunzle, On the spherical symmetry of a static perfect fluid, Comm. Math. Phys. 20(1971), 85-100
6. S.Kaneyuki and Williams, Almost paracontact and parahodge structures on manifolds, Nagoya Math. J. 99(1985), 173-187.
7. I. Sato, On a structure similar to almost contact structure I, Tensor N. S., 30(1976),219-224.
8. M. D. Siddiqui, A. N. Siddiqui and O. Bahadir, Generalized solitonic charchteristics in trans-para-Sasakian manifolds, Int. J. of Maps in Math., 1(2024), 59-76.
9. T. Takahashi, Sasakian manifold with pseudo-Riemannian metric, Tohoku Math. J.21(1969), 644-653.
10. S. Zamkovoy and V. Tzanov, Non-existence of flat paracontact metric structure in dimension greater than or equal to five, Ann. Sofia. Univ. math. and Inf. 100 (2010),27-34.
11. S.Zamkovoy, On geometry of trans-para-Sasakian manifold, Filomat, 18(2019), 6015-6024.
12. S.Zamkovoy, On para-Kenmotsu manifolds, Filomat, 32( 2018), 4971-4980.
13. S.Zamkovoy, Canonical connections on paracontact manifolds, Ann. Glob. Anal. Geom.6(2009), 37-60.