R. Harris, C. Hill, and S. Parke. (1999)cite arxiv:hep-ph/9911288Comment: 20 pages in a latex file including 2 tables and 7 figures in encapsulated postscript.
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.