G. Q. MEMON, & A.W. SHAIKH. (2016). Invariant Results of Viscoelastic Fluid Flow without Porous space in a Pipe using Oldroyd–B Constitutive Model: Analysis of Velocity . Sindh University Research Journal - SURJ (Science Series), 48(2). Retrieved from https://sujo.usindh.edu.pk/index.php/SURJ/article/view/4921