1. J Binney, S Tremaine and G Dynamics Princeton University press Princeton (1987)
2. T Harko, F S N Lobo, S D Nojiri Odintsov arXiv:1104.2669[gr-qc] (2011)
3. S Nojiri, S D Odintsov arXiv:hep-th/0307288 (2003)
4. S Nojiri, S D Odintsov Phys. Rev. D. 74 086 (2006)
5. M F Shamir Astrophys. Space Sci. 330 183 (2010)