Syed Mustapha, S. M. F. D., T. N. Phillips, and C. J. Price. “A Case-Based System For Constructing a Constitutive Equation For a Viscoelastic Material in a Laminar Flow”. Malaysian Journal of Computer Science, vol. 11, no. 2, Dec. 1998, pp. 40-51, http://jummec.um.edu.my/index.php/MJCS/article/view/5735.