Measuring the Higgs branching fraction into two photons at future linear e+e- colliders E. Boos, J.-C. Brient, D.W. Reid, H.J. Schreiber and R. Shanidze Eur. Phys. J. C, 19 3 (2001) 455-461 Published online: 15 March 2001 DOI: 10.1007/s100520100636