Frameworks for generalized anisotropic conformally flat polytropes in f(R) gravity S. A. Mardan, Zargona Amjad and I. Noureen Eur. Phys. J. C, 82 9 (2022) 794 Published online: 06 September 2022 DOI: 10.1140/epjc/s10052-022-10738-7