2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/185329Theoretical expectations concerning the low $x$ and low $Q^2$ behaviour of $g_1$ are summarized and compared with the recent SMC data.4 pages, plain LATEX, 1 eps figure; contribution to 3rd UK Phenomenology Workshop on HERA Physics, St. John's College, Durham, UK, September 1998High Energy Physics - PhenomenologySpin dependent structure function $g_1$ at small $x$ and small $Q^2$text