2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49128The production of jets is studied in collisions of virtual photons, specifically for applications at HERA. Photon flux factors are convoluted with matrix elements involving either direct or resolved photons and, for the latter, with parton distributions of the photon. Special emphasis is put on the range of uncertainty in the modeling of the resolved component. The resulting model is compared with existing data and further tests are proposed.1+13 pages, LaTeX2e, 16 eps figures, to appear in the Proceedings of the DESY Workshop on "Monte Carlo Generators for HERA Physics"High Energy Physics - Phenomenologytext