A. Belitsky, and A. Radyushkin. (2005)cite arxiv:hep-ph/0504030
Comment: 370 pages, 62 figures; Dedicated to Anatoly V. Efremov on occasion of
his 70th anniversary.
A. Martin, W. Stirling, R. Thorne, and G. Watt. (2009)cite arxiv:0905.3531
Comment: 45 pages, 17 figures. Grids can be found at
http://projects.hepforge.org/mstwpdf/ and in LHAPDF V5.7.1. v2: version to
appear in EPJC.