U. Langenfeld, S. Moch, and P. Uwer. (2009)cite arxiv:0907.2527
Comment: 5 pages, 9 figures, to appear in the proceedings of the XVII
International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS
2009, 26-30 April 2009, Madrid.
M. Cacciari, S. Frixione, M. Mangano, P. Nason, and G. Ridolfi. (2008)cite arxiv:0804.2800
Comment: Updated description of comparison with 0804.1476. Improvements in
text and update of published references. No changes in results. Version to
appear in JHEP. v3 fixes a typo in the authors' list.