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### Author comment for 2002A&A...386..169L

Erratum: Eq. (28) should have opposite sign, i.e. $e_{0Q}=-\cos (\vec{v_0},\vec{r_Q})=- \cos (\theta _0)\cos (\phi _0-\phi)$. However, numbers and orientation of the warp are correct as stated.

Author comment submitted on 26 May, 2011 by Martín López-Corredoira ( martinlc@iac.es )