Numerical solution of chemically reactive non-Newtonian fluid flow: Dual stratification Khalil Ur Rehman, M. Y. Malik, Abid Ali Khan, Iffat Zehra, Mostafa Zahri and M. Tahir Eur. Phys. J. Plus, 132 12 (2017) 550 Published online: 28 December 2017 DOI: 10.1140/epjp/i2017-11822-0