A model for parton showers in QCD - Fox, G.C.; Wolfram, S. (Elsevier)
A Monte Carlo model for the development of parton jets in QCD is described. Explicit low-order calculations are supplemented by leading logarithmic approximations for higher orders.
http://linkinghub.elsevier.com/retrieve/pii/0550-3213(80)90111-X
Keywords: U