Six-fermion calculation of intermediate-mass Higgs boson production at future colliders Guido Montagna, Mauro Moretti, Oreste Nicrosini and Fulvio Piccinini Eur. Phys. J. C, 2 3 (1998) 483-496 Published online: 20 February 1998 DOI: 10.1007/s100529800707