P3D: a general data-reduction tool for fiber-fed integral-field spectrographsC. Sandin, T. Becker, M. M. Roth, J. Gerssen, A. Monreal-Ibero, P. Böhm and P. WeilbacherA&A, 515 (2010) A35DOI: https://doi.org/10.1051/0004-6361/201014022