PHOTON SPHERES NEAR BLACK HOLES IN A MODEL WITH AN ANISOTROPIC FLUID ArticleIvashchuk V.D., Bolokhov S.V., Belisarova Farida Beksultanovna, Kydyrbay N., Malybayev A.N., Nurbakova Guliya S., Zheng B.Gravitation and Cosmology. Том 31. 2025. С. 392-400
