2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/36927Recent results on heavy flavor production at HERA are presented. New measurements of charm production are available in the region of $ Q^2 <$ 1000 GeV$^2$ for $D^*$ and in the photoproduction limit, $Q^2\to 0$, for $D_s$. The results are compared to theoretical calculations and the charm proton structure function \f2cc$(x,Q^2)$ is extracted. A new independent measurement of the $b\bar{b}$ cross section using a $b$-lifetime tag is reported.10 pages, 19 figures, Contribution to `Workshop on Heavy Quarks at Fixed Target, October 2000High Energy Physics - Experimenttext