1 Erratum to: Probab. Theory Relat. Fields               DOI 10.1007/s00440-011-0404-1

In order to produce parameters for which the approximation estimate (3.30) holds true (i.e. in order to ensure that the right hand sides of (3.29) form a converging series), as well as to satisfy other estimates in Sects. 3 and 4, the condition (2.18) in Assumption 2.1 should be written as

$$\begin{aligned} \sum _{r=0}^\infty r^{\frac{16}{\delta }}\beta ^\delta _q(r)<\infty . \end{aligned}$$