Particle Production in ep Collisions at HERA

Charged particle spectra were measured in deep inelastic interactions at HERA in different kinematic regions of x and Q2 with the emphasis to study parton dynamics beyond DGLAP evolution. The data collected at HERA were compared with measurements obtained in e+e− annihilation and with Monte Carlo models. Scaled momentum distributions of strange hadrons were studied and compared with models and NLO QCD calculations.