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. 2019 Jun 13;17(4):231–244. doi: 10.18502/ijrm.v17i4.4548

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Copyright © 2019 Somayeh Ghiyasi Hafezi et al.

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. which permits unrestricted use and redistribution provided that the original author and source are credited.

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$λ = 0.47, b = 0.34, η = 0.47, μ_{1} = 0.9, u_{1} = 0.04, ζ = 0.16, μ_{2} = 0.92, u_{2} = 0.29, α = 0.16,$ and $γ = 0.23$ .