Muhammad, S. .-., and J. R. Khan. “Effect of Surface Configurations and Their Aspect Ratio on Thermal Behavior of Liquids Flowing over a Rotating Surface”. Journal of the Pakistan Institute of Chemical Engineers, vol. 42, no. 1, Aug. 2014, pp. 71-80, http://piche.org.pk/journal/index.php/jpiche/article/view/119.