Solutions to τ-equation hierarchy related to the AKNS spectral problem: Addendum to “The exact solutions for the nonisospectral AKNS hierarchy through the inverse scattering transform”: [Physica A 339 (2004) 248–266]

This paper is an addendum to (Physica A 339 (2004) 248–266): The exact solutions for the nonisospectral AKNS hierarchy through the inverse scattering transform. Exact solutions to τ-equations related to the AKNS spectral problem are obtained via the inverse scattering transform. As reductions, τ-equation hierarchy corresponding to the mKdV system, the nonlinear Schördinger system and sine-Gordon system are considered.