Global QCD analysis of parton structure of the nucleon: CTEQ5 parton distributions H.L. Lai, J. Huston, S. Kuhlmann, J. Morfin, F. Olness, J.F. Owens, J. Pumplin and W.K. TungEur. Phys. J. C, 12 3 (2000) 375-392DOI: https://doi.org/epjc/v12/p375(epjc0196)