The coupling of the lightest SUSY Higgs boson to two photons in the decoupling regimeA. Djouadi, V. Driesen, W. Hollik and J. I. IllanaEur. Phys. J. C, 1 1-2 (1998) 149-162DOI: https://doi.org/epjc/v1/p149(epj622)