รบกวนขอ paper ครับ

Numerical simulation of viscoelastic flows through a planar contraction
https://www.sciencedirect.com/science/article/pii/0377025795014063

Birefringence and laser-Doppler velocimetry (LDV) studies of viscoelastic flow through a planar contraction
http://www.sciencedirect.com/science/article/pii/0377025794850569

Comparison of a quasi-Newtonian fluid with a viscoelastic fluid in planar contraction flow
http://www.sciencedirect.com/science/article/pii/S0377025799000038

shayanin5143@gmail.com
ขอบคุณมากครับ