Nanostructures study of CNT nanofluids transport with temperature-dependent variable viscosity in a muscular tubeNoreen Sher Akbar, Syed Ali Abid, Dharmendra Tripathi and Nazir Ahmed MirEur. Phys. J. Plus, 132 3 (2017) 110DOI: https://doi.org/10.1140/epjp/i2017-11378-y