Abreu, P., Cortina Gil, E., & DELPHI Collaboration. (2002). Charged and Identified Particles in the Hadronic Decay of W Bosons and in e+e- -> q qbar from 130 to 200 GeV. European Physical Journal C. Particles and Fields, 25, 493. https://doi.org/10.1007/s100520200922 (Original work published 2002)