G. Q. MEMON, Z. A. KALHORO, A. W. SHAIKH and N. P. GILL 2017. Analytical Results of Viscoelastic Fluid Flow through Porous Media in a Circular Pipe Employing Oldroyd–B Constitutive Model . Sindh University Research Journal - SURJ (Science Series). 49, 2 (Jun. 2017). DOI:https://doi.org/10.26692/surj.v49i2.1392.