Six-fermion production and Higgs boson physics at future e+ e- colliders F. Gangemi, G. Montagna, M. Moretti, O. Nicrosini and F. Piccinini Eur. Phys. J. C, 9 1 (1999) 31-41 Published online: 27 April 1999 DOI: 10.1007/s100520050510