P3D: a general data-reduction tool for fiber-fed integral-field spectrographs C. Sandin, T. Becker, M. M. Roth, J. Gerssen, A. Monreal-Ibero, P. Böhm and P. Weilbacher A&A, 515 (2010) A35 Published online: 04 June 2010 DOI: 10.1051/0004-6361/201014022