Four-fermion production in electron-positron collisions with NEXTCALIBUR
  We introduce a new, fully massive, Monte Carlo program to compute all four-fermion processes in electron-positron collisions, including Higgs production. We outline our strategy for the matrix element evaluation, the phase space generation and the implementation of the leading higher order effects, and show, where available, comparisons with existing results. 
F. A. Berends, C. G. Papadopoulos and R. Pittau