Rahman, M. K., M. S. Alam, and M. A. H. Khan. “Stability of MHD Unsteady Nanofluid Flow Through Expanding or Contracting Channel With Porous Walls”. Science & Technology Asia, vol. 22, no. 3, Oct. 2017, pp. 134-42, https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/102559.