Mixed bio-convection analysis on MHD Casson hybrid nanofluid flow over a spinning cone/plate embedded in a variable porosity medium: a comparative studyN. M. Lisha and A. G. Vijaya KumarEur. Phys. J. Plus, 138 11 (2023) 1042DOI: https://doi.org/10.1140/epjp/s13360-023-04650-6