TESTING THEORY. “Deb et al. derived the analytic solutions for anisotropic strange stars with same EoS and discussed the physical behavior of LMC X-4 as an example of quark star. The influence of electric field on the stability of Her X-1, 4U1820-30 and SAX J 1808.4- 3658 star candidates are also investigated in this gravity.”
https://www.sciencedirect.com/science/article/pii/S0577907319309773