S. Alam, M., M. A. H. Khan, and M. A. Alim. “Entropy Generation for MHD Radiative Variable Thermal Conductivity Nanofluid Flow through Porous Channel”. Science & Technology Asia, vol. 21, no. 1, Mar. 2016, pp. 71-86, https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/52123.