G. Q. MEMON; A.W. SHAIKH. 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), [S. l.], v. 48, n. 2, 2016. Disponível em: https://sujo.usindh.edu.pk/index.php/SURJ/article/view/4921. Acesso em: 2 apr. 2026.