2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/46312Recent developments in theory and phenomenology relevant to deep inelastic lepton scattering are reviewed, concentrating on the following topics: Predicted behaviour of non-singlet and polarized structure functions at small $x$; Theoretical studies of saturation and unitarity effects at small $x$ in quarkonium scattering; Renormalons and higher twist contributions; Next-to-leading-order calculations of jet cross sections; Forward jet production as a probe of small-$x$ dynamics.20 pages LaTeX, 10 figures, uses epsfig.sty, procl.sty (included). Talk at DIS96, Rome, April 1996High Energy Physics - Phenomenologytext