2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/185003The energy available for gamma(*)gamma(*) physics at LEP2 is opening a new window on the study of diffractive phenomena, both non-perturbative and perturbative. We discuss some of the uncertainties and problems connected with the experimental measurements and their interpretation.6 pages, 6 figures, submitted to proceedings of the Durham Collider Workshop, 22-26 September 1999High Energy Physics - PhenomenologyHigh Energy Physics - Experimenttext