Central density dependent anisotropic compact stars Mehedi Kalam, Farook Rahaman, Sk. Monowar Hossein and Saibal Ray Eur. Phys. J. C, 73 4 (2013) 2409 Published online: 23 April 2013 DOI: 10.1140/epjc/s10052-013-2409-7