1 Erratum to: Nonlinear Dyn DOI 10.1007/s11071-016-3002-z

The second part of the statement in Proposition 9 of the original publication was incorrect. It should read as follows:

(ii) If \(\xi (t)=(\xi ^{u}(t),\xi ^{s}(t))^{\hbox {T}}\) is a fixed point of \(\mathcal {T}_{x^{s}} \) for some \(x^{s}\in \mathbb {R}^{d^{s}}\) and \(\left\| \xi \right\| _\infty \le r^{*}\), where \(r^{*}\) satisfies (12), then \(\xi (t)\) is a solution of (8) with \(\xi ^{s}(0)=x^{s}\) and \(\lim _{t\rightarrow \infty } \xi (t)=0\).