G. Q. MEMON and A.W. SHAIKh, “Study for Darcy-Brinkman model connected Oldroyd–B Constitutive Model related with Solutions of Velocity of Viscoelastic Fluid Flow in a circular Pipe filled with Porous Media G”, Sindh. Uni. Res. J. SS, vol. 49, no. 4, May 2020.