2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48908A review is presented of diffractive vector meson production at HERA, with stress on the investigation of ``hard'' features and comparisons with theoretical predictions based on perturbative QCD approaches.Review presented at the XXVIII International Symposium on Multiparticle Dynamics, Delphi, Greece, September 1998, 12 pages, 14 figuresHigh Energy Physics - Phenomenologytext