A posteriori inclusion of parton density functions in NLO QCD final-state calculations at hadron colliders: the APPLGRID projectTancredi Carli, Dan Clements, Amanda Cooper-Sarkar, Claire Gwenlan, Gavin P. Salam, Frank Siegert, Pavel Starovoitov and Mark SuttonEur. Phys. J. C, 66 3-4 (2010) 503-524DOI: https://doi.org/10.1140/epjc/s10052-010-1255-0