Unsteady thin Casson-nanoliquid film flow over a porous stretching sheetY. Ghatani, Thoudam Roshan and S. MaityEur. Phys. J. Spec. Top., 230 5 (2021) 1331-1343DOI: https://doi.org/10.1140/epjs/s11734-021-00055-7