A FORTRAN code for γγ→ZZ in SM and MSSM T. Diakonidis, G.J. Gounaris and J. Layssac Eur. Phys. J. C, 50 1 (2007) 47-52 Published online: 24 January 2007 DOI: 10.1140/epjc/s10052-006-0202-6