Addendum to: “A note on traveling wave solutions for a class of nonlinear viscoelastic media” [Phys. Lett. A 335 (2005) 150]
Keywords: ویسکوزیته غیرخطی; 46.40.Cd; 83.60.Df; Traveling wave solution; Nonlinear viscoelasticity; Transcritical bifurcation; Lambert W-function;