Entropy-optimized radiating water/FCNTs nanofluid boundary-layer flow with convective condition Hamza Berrehal, Fazle Mabood and O. D. Makinde Eur. Phys. J. Plus, 135 7 (2020) 535 Published online: 06 August 2020 DOI: 10.1140/epjp/s13360-020-00536-z